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The Collaborative International Dictionary
Nemaline

Nemaline \Nem"a*line\ (n[e^]m"[.a]*l[imac]n), a. [L. nema thread, Gr. nh^ma, fr. ne`ein to spin.] (Min.) Having the form of threads; fibrous.

Wiktionary
nemaline

a. (context mineralogy English) Having the form of threads; fibrous.