From Wiktionary, the free dictionary
From acantho- + -pore (“opening”).[1]
acanthopore (plural acanthopores)
- (paleontology) A tubular spine in some bryozoans. [First attested in the mid 19th century.]
- ^ Philip Babcock Gove (editor), Webster's Third International Dictionary of the English Language, Unabridged (G. & C. Merriam Co., 1976 [1909], →ISBN)