filtergram
nounEtymology From filter + -gram.
1
Astronomy, Natural sciences A photograph of the sun at a particular frequency range (by means of a variable filter).
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
Etymology From filter + -gram.
Astronomy, Natural sciences A photograph of the sun at a particular frequency range (by means of a variable filter).
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
Do you accept non-essential analytics cookies?