English
lichenase
From lichen + -ase.
Formed from lichen + -ase
Proto-Indo-European *leyǵʰ- ‘to lick’
…
Proto-Hellenic *léikʰō
Ancient Greek λείχω ‘to lick’
Ancient Greek λειχήν ‘Lichen-like disease affecting the skin of…’
Latin līchēn ‘a cryptogamic species of vegetation growing…’
English lichen
Today it means
noun Any glucanase that can hydrolyse lichenins
Language periods are conventional ranges, not dates for this word.
Etymograph / lichenase