This page gathers the 9,272 dictionary entries belonging to the domain “Biology”, as labelled by Wiktionary. Each word leads to its full entry: definitions, etymology, pronunciation, examples. Page 85 of 93: from “tearstain” to “thallophyte”.
- tearstain noun Reddish-brown or rust-colored streaks found on the fur under the eyes, most commonly on white or light-colored animals.
- tectibranchiate adj Having the gills covered by the mantle; of or relating to the former order Tectibranchiata.
- tectiform adj Roof-shaped; sloping downwards on two sides from a raised central ridge.
- tectology noun A Haeckelian division of morphology; the science of organic individuality constituting the purely structural portion of morphology, in…
- tectonic adj Structural.
- tectotype noun A type specimen explicitly designated to show microscopic structure.
- tegmen noun A covering or integument, usually referring to a thin layer or membrane in an organism.
- tegula noun A small sclerite situated above the base of the costal vein in the wings of various insects, and attached to the anterolateral portion of…
- tegular adj Relating to a tegula
- teichoic acid noun Any of several polymers of glycerol or ribitol, linked via phosphodiester bonds, that are found in the cell walls of many bacteria
- teichuronic acid noun Any of a group of heteropolymeric polysaccharides, composed of a uronic acid and other carbohydrates, present in the walls of some…
- teleoconch noun The portion of a shell of a conchiferan mollusc formed immediately after the larval stage of the life cycle of the organism.
- teleogenesis noun The preferential evolution of features and organs in certain ways
- teleomorph noun The final, sexually reproductive form in the life cycle of any fungus of the phyla Ascomycota and Basidiomycota.
- teleophyte noun a plant of perfect or complete organization; one of the higher plants
- teleosaur noun Any of several species of marine crocodylomorphs belonging to Teleosauridae . They are similar to the modern-day gharial.
- tellin noun A marine bivalve mollusc, of the genus Tellina, that burrows in the sand, from where it siphons detritus.
- telocentric adj (of a chromosome) having the centromere at one end
- telokin noun An abundant protein found in smooth muscle, identical to the C-terminus of myosin light-chain kinase.
- telome noun A terminal branch of a stem, thought to have evolved into the leaf, according to one theory of plant morphology.
- telomerase noun An enzyme in eukaryotic cells that adds a specific sequence of DNA to the telomeres of chromosomes after they divide; gives the chromosomes…
- telopeptide noun an amino acid sequence, (normally at one or more ends), that have a function in building or conforming a protein and are proteolytically…
- telophase noun The final stage of mitosis or meiosis during which the daughter chromosomes move towards opposite ends of the nuclear spindle
- telosomic adj having one segment of a chromosome missing
- telson noun The part of an arthropod or crustacean posterior to the last segment, often resembling an armored tail or tip of the tail.
- temnospondyl noun Any of many extinct primitive amphibians (labyrinthodonts) of the order Temnospondyli, from the Carboniferous, Permian and Triassic periods.
- temporal noun Any of a reptile's scales on the side of the head between the parietal and supralabial scales, and behind the postocular scales.
- temporin noun Any of a family of peptides isolated originally from the skin secretion of the European red frog, Rana temporaria.
- tenaculum noun A hapteron or holdfast.
- tenderizer noun Any substance added to meat, especially papain, before cooking in order to make it more tender.
- tenderling noun One of the first antlers of a deer.
- tendon noun The hamstring of a quadruped.
- tendril noun A thin, spirally coiling stem that attaches a plant to its support.
- teneral adj In the pale, soft-bodied state that follows moulting, before the hardening and darkening of the cuticle, during which the creature is able…
- tent caterpillar noun A larva belonging to any of a number of species of moths of the genus Malacosoma, known for destructive infestation of trees in which the…
- tentacle noun An elongated, boneless, flexible organ or limb of some animals, such as the octopus and squid.
- tentaculite noun Any of numerous species of small, conical shells found in Paleozoic rocks, fossils from the extinct genus †Tentaculites.
- tentaculum noun A tentacle.
- tepal noun Any component of the perianth (outermost whorls of flower parts, not involved in reproduction), especially when the components are not…
- tephritoid noun Any fly of the superfamily Tephritoidea.
- tepidarium noun A warm greenhouse typically used for plants from South Africa.
- teratoid adj Monster-like, exhibiting abnormal development.
- teratologic adj Dealing with the study of production, development, anatomy, and classification of monsters.
- terebrant adj Of an insect: that bores holes; specifically, of the suborder Terebrantia of thrips which bore using their ovipositors.
- terebratulid noun A brachiopod of the order Terebratulida, having a short pedicle and a calcareous loop supporting the tentacles.
- tergum noun The upper or dorsal surface of an articulated animal such as an arthropod.
- terminal noun The end ramification (of an axon, etc.) or one of the extremities of a polypeptide.
- terminalize verb (of the bonds between paired chromosomes) To move towards the ends of the chromosomes during meiosis
- terminator noun A DNA sequence that causes RNA transcription to cease and an mRNA transcript to break off.
- terminomics noun The study of the biochemical importance of terminal peptides in proteins, especially N-terminal peptides
- termitophilous adj That has a symbiotic or mutualistic relationship with termites, and typically lives in a termite nest
- tern adj Consisting of three components; ternate, threefold, triple.
- ternary name noun A scientific name at the rank of subspecies: an expansion of a binomial name (a genus and a species) combined with the name of the…
- terraneous adj Growing on dry ground.
- terraqueous adj Of a plant: living in both land and water; amphibious.
- terrestrial noun A ground-dwelling plant.
- terrestrialism noun The practice of being terrestrial, typically of amphibians in a dry climate
- terrestriality noun Adaptation to living on the ground (rather than in the trees or seas)
- territorial adj Displaying territoriality.
- territoriality noun The pattern of behaviour in animals that defines and defends a territory.
- territory noun An area that an animal of a particular species consistently defends against its conspecifics.
- tertiary adj Of quills: growing on the innermost joint of a bird's wing; tertial.
- tertiary structure noun The manner in which the helices or sheets of a protein are folded to give a three-dimensional structure.
- test noun Testa; seed coat.
- testa noun A seed coat.
- testacea noun Any of various shellfish, especially those of the obsolete orders Vermes or Acephala, or the suborder Thecosomata.
- testacean noun One of the rhizopods in the former grouping Testacea.
- testate adj Having a test (external calciferous shell or endoskeleton)
- testcross noun The breeding of an individual with a phenotypically recessive individual, in order to determine the zygosity of the former by analysing…
- testis noun An analogous gland in invertebrates such as the hydra.
- testosterone noun A steroid hormone that stimulates development of male secondary sexual characteristics, produced mainly in the testes, but also in the…
- testudinarious adj Resembling or pertaining to the shell of a tortoise.
- tethered adj Tied, strapped, especially with tethers or hobbles.
- tetrabranchiate adj Of or relating to the Tetrabranchiata, a former order of cephalopod having four gills.
- tetracolpate adj Having four grooves, or colpi, on each grain.
- tetracyclic adj Of a flower: composed of four whorls or organs.
- tetrad noun Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
- tetradelphous adj Having its stamens fused together at least partly by the filaments so that they form four separate groups, some of which may contain a…
- tetradynamous adj Belonging to the former order Tetradynamia; having six stamens, four of which are uniformly longer than the others.
- tetrahydrobiopterin noun A naturally-occurring nutrient and essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the biosynthesis of the…
- tetrahydrofolate noun The conjugate base of, or any salt or ester of, tetrahydrofolic acid; it is a coenzyme, formed by reduction of folic acid, involved in the…
- tetrandrous adj Belonging to the class Tetrandria
- tetraploid adj Having four sets of chromosomes.
- tetraploidy noun The state of being tetraploid, having four sets of chromosomes.
- tetrapyrrole noun any of several natural pigments having a structure of four pyrrole rings connected by a one-carbon unit
- tetrarch adj Having four vascular strands in a fibrovascular cylinder or stele.
- tetrasomic adj Having four copies of a particular chromosome
- tetraspan noun Any of a family of membrane glycoproteins whose multimolecular complexes have four transmembrane domains
- tetratonic adj Made of four amino acids.
- tetrodont adj Of or relating to the tetrodons.
- textome noun The complete set of biological literature that contain useful information when combined to generate new information through bioinformatics.
- texture noun A tissue.
- TGIF noun Initialism of transforming growth interacting factor.
- thalamus noun The receptacle of a flower; a torus.
- thalassian noun Any sea tortoise.
- thalassiophyte noun any plant belonging to one of the obsolete taxonomic groups known as Thalassiophyta, which were believed to comprise various parts of the…
- thallic adj Pertaining to a thallus
- thalline adj Having a thallus
- thalloid adj Of a plant, alga, or fungus lacking complex organization, especially lacking distinct stems, roots, or leaves.
- thallophyte noun Any of very many primitive plants that consist of a thallus (plant body not differentiated into roots, stems and leaves), formerly…