Ecthoreum
Pronunciation : Ec`tho*re"um
Part of Speech : n.;
Etymology : [NL., fr. Gr. (Zo?l.)
Definition : Defn: The slender, hollow thread of a nettling cell or cnida. See Nettling cell. [Written also ecthor?um.]
pl. Ecthorea.
Source : Webster's Unabridged Dictionary, 1913