- (n.) A whole seed, as contained within the seed coats.
- (n.) The body or the head of a comet.
- (n.) A body, usually spheroidal, in a cell or a protozoan, distinguished from the surrounding protoplasm by a difference in refrangibility and in behavior towards chemical reagents. It is more or less protoplasmic, and consists of a clear fluid (achromatin) through which extends a network of fibers (chromatin) in which may be suspended a second rounded body, the nucleolus (see Nucleoplasm). See Cell division, under Division.
- (n.) A visceral mass, containing the stomach and other organs, in Tunicata and some mollusks.
- (n.) A kernel; hence, a central mass or point about which matter is gathered or to which accretion is made; the central or material portion; -- used both literally and figuratively.
- (n.) An incipient ovule of soft cellular tissue.
- (n.) The central part around which additional growths are added, as of an operculum.
- (n.) The tip or earliest part, of a univalve or bivalve shell.
- (n.) The body or the head of a comet.
- (n.) The central part around which additional growths are added, as of an operculum.
- (n.) A body, usually spheroidal, in a cell or a protozoan, distinguished from the surrounding protoplasm by a difference in refrangibility and in behavior towards chemical reagents. It is more or less protoplasmic, and consists of a clear fluid (achromatin) through which extends a network of fibers (chromatin) in which may be suspended a second rounded body, the nucleolus (see Nucleoplasm). See Cell division, under Division.
- (n.) The tip or earliest part, of a univalve or bivalve shell.
- (n.) A kernel; hence, a central mass or point about which matter is gathered or to which accretion is made; the central or material portion; -- used both literally and figuratively.
- (n.) A whole seed, as contained within the seed coats.
- (n.) An incipient ovule of soft cellular tissue.
- (n.) A visceral mass, containing the stomach and other organs, in Tunicata and some mollusks.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). nucleus. Retrieved September 20, 2026, from http://smartdefine.org/nucleus/definitions/2037598 |
| Chicago | Webster's. 2011. "nucleus" http://smartdefine.org/nucleus/definitions/2037598 (accessed September 20, 2026). |
| Harvard | Webster's 2011, nucleus, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/nucleus/definitions/2037598>. |
| MLA | Webster's. "nucleus" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/nucleus/definitions/2037598> |