| 释义 |
‖ nucleolus Biol.|njuːˈkliːələs, njuːkliːˈəʊləs|
Pl. -oli |-əlaɪ, -əʊlaɪ|.
[L. nucleolus, dim. of nucleus.]
A small nucleus; esp. a minute rounded body within the nucleus of a cell in animal or vegetable substance; also, a paranucleus. Also Comb.
1845Todd & Bowman Phys. Anat. I. 158 They usually contain some central granules or nucleoli. 1846Day tr. Simon's Anim. Chem. II. 449 It contains a nucleus about the size of a nut,..and in the centre of this is a nucleolus of the size of a large pea. 1870H. A. Nicholson Man. Zool. 41 No differentiated organs of any kind beyond the nucleus and nucleolus exist. 1886[see nucleolid]. |