English

exocellular

From exo- + cellular.

Proto-Indo-European *h₁eǵʰs ‘out of’

Proto-Hellenic *eks

Ancient Greek ἐκ ‘Out of, from’

Ancient Greek ἔξω ‘outer’

English exo-

Proto-Indo-European *ḱel- ‘to cover’

Latin cella ‘a small room, a hut, storeroom’

New Latin cellula ‘cell’

New Latin cellulāris

Today it means

adj That occurs outside of a cell (though may be initiated from within one)

Language periods are conventional ranges, not dates for this word.

Etymograph / exocellular