† prothyalosomen.

Forms:

α. 1800s prothyalosome.

β. 1800s prothyalosoma.

Origin: A borrowing from French. Etymon: French prothyalosome.

Etymology: < French prothyalosome (E. van Beneden 1883, in Arch. de biol. 4 321) < proto- proto- comb. form + hyalosome (see hyalosome n. at hyalo- comb. form ).In β. forms after words ending in -soma, e.g. mesosoma n., metasoma n.

Biology. Obsolete. rare.

A large nucleolus-like body in the nucleus of an ovum.

ΚΠ

1884 Jrnl. Royal Microsc. Soc. 4 566 This characteristic figure consists mainly of achromatic fibrils..lying in a clear body (representing the prothyalosome).

1887 Amer. Naturalist 21 20 The multiplication of a single nucleolus produces one large nucleolated nucleolus (the ‘prothyalosome’) and several smaller ones.

Derivatives

prothyalosomal adj.

ΚΠ

1890 Cent. Dict. Prothyalosomal, of or pertaining to the prothyalosoma.

This is a new entry (OED Third Edition, September 2007; most recently modified version published online December 2020).

单词	prothyalosome
释义	† prothyalosomen. Forms: α. 1800s prothyalosome. β. 1800s prothyalosoma. Origin: A borrowing from French. Etymon: French prothyalosome. Etymology: < French prothyalosome (E. van Beneden 1883, in Arch. de biol. 4 321) < proto- proto- comb. form + hyalosome (see hyalosome n. at hyalo- comb. form ).In β. forms after words ending in -soma, e.g. mesosoma n., metasoma n. Biology. Obsolete. rare. A large nucleolus-like body in the nucleus of an ovum. ΚΠ 1884 Jrnl. Royal Microsc. Soc. 4 566 This characteristic figure consists mainly of achromatic fibrils..lying in a clear body (representing the prothyalosome). 1887 Amer. Naturalist 21 20 The multiplication of a single nucleolus produces one large nucleolated nucleolus (the ‘prothyalosome’) and several smaller ones. Derivatives prothyalosomal adj. ΚΠ 1890 Cent. Dict. Prothyalosomal, of or pertaining to the prothyalosoma. This is a new entry (OED Third Edition, September 2007; most recently modified version published online December 2020). < n.1884
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