NUCLEUS

(Lat.), n. m. Nu2(nu4)'kle2-u3s(u4s). Gr., Kapvov, irupriv. From nux, a nut. Fr., nucleus, noyau (cellulaire [1st def.]). Ger., Kern, Kerxblaschen (1st def.), Zellenkern (1st def.), Zellkern (1st def.). 1. The comparatively large body within and usually near the centre of any typical cell and forming an integral part of it. Its significance as an integral part of the cell was first recognized by R. Brown, who gave the name in 1831 ("Linn. Soc. Trans.," 1833, p. 710). The latest researches into the nature and O, no; O2, not; O8, whole; Th, thin; Th, the; U, like oo in 306 [s. 115]