arachno-
prefixEtymology From international scientific vocabulary, reflecting a New Latin combining form, from Ancient Greek ἀράχνη (arákhnē, “spider”). By surface analysis, arachn- + -o-. Piecewise doublet of araneo-.
1
Morpheme Arachnid; arachnidial; spider.
2
Chemistry, Inorganic chemistry, Natural sciences, Physical sciences Morpheme A boron structure intermediate between nido- and hypho- in degree of openness.