English-Thai Dictionary

nucleus

N ส่วน ที่อยู่ ตรงกลาง ของ อะตอม (ทาง ฟิสิกส์  นิวเคลียส  suan-ti-yu-trong-klang-kong-ar-tom

 

nucleus

N ส่วน ที่อยู่ ตรงกลาง ของ เซลล์ ของ สิ่งมีชีวิต (ทางชีววิทยา  ก้อน สาร สีเทา ใน สมอง และ ไขสันหลัง  นิวเคลียส  suan-ti-yu-trong-klang-kong-sel-me-chr-wid

 

nucleus

N ใจกลาง  แกนกลาง  ส่วนสำคัญ  center core essence heart nub heart jai-klang

 

Webster's 1828 Dictionary

NUCLEUS

n.[L. a nut. ] 1. Properly, the kernel of a nut; but in usage, any body about which matter is collected.
2. The body of a comet, called also its head, which appears to be surrounded with light.

 

Webster's 1913 Dictionary

NUCLEUS

Nu "cle *us, n.; pl. E. Nucleuses, L. Nuclei. Etym: [L., a kernel, dim. fr. nux, nucis, nut. Cf. Newel post. ]

 

1. 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. It must contain within itself a nucleus of truth. I. Taylor.

 

2. (Astron.)

 

Defn: The body or the head of a comet.

 

3. (Bot. ) (a ) An incipient ovule of soft cellular tissue. (b ) A whole seed, as contained within the seed coats.

 

4. (Biol.)

 

Defn: 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.

 

Note: The nucleus is sometimes termed the endoplast or endoblast, and in the protozoa is supposed to be concerned in the female part of the reproductive process. See Karyokinesis.

 

5. (Zoöl.) (a ) The tip, or earliest part, of a univalve or bivalve shell. (b ) The central part around which additional growths are added, as of an operculum. (c ) A visceral mass, containing the stomach and other organs, in Tunicata and some mollusks.

 

New American Oxford Dictionary

nucleus

nu cle us |ˈn (y )o͞oklēəs ˈn (j )ukliəs | ▶noun ( pl. nuclei |-klēˌī | ) the central and most important part of an object, movement, or group, forming the basis for its activity and growth: the nucleus of a film-producing industry. • Physics the positively charged central core of an atom, containing most of its mass. • Biology a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material. • Astronomy the solid part of the head of a comet. • Anatomy a discrete mass of gray matter in the central nervous system. ORIGIN early 18th cent.: from Latin, literally ‘kernel, inner part, ’ diminutive of nux, nuc- ‘nut. ’

 

Oxford Dictionary

nucleus

nucleus |ˈnjuːklɪəs | ▶noun ( pl. nuclei |-lɪʌɪ | ) 1 the central and most important part of an object, movement, or group, forming the basis for its activity and growth: the nucleus of a British film-producing industry. 2 Physics the positively charged central core of an atom that contains most of its mass. 3 Biology a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material. 4 a discrete mass of grey matter in the central nervous system. 5 Astronomy the solid part of a comet's head. ORIGIN early 18th cent.: from Latin, literally ‘kernel, inner part ’, diminutive of nux, nuc- ‘nut ’.

 

American Oxford Thesaurus

nucleus

nucleus noun the nucleus of the international banking world: core, center, central part, heart, nub, hub, middle, eye, focus, focal point, pivot, crux.

 

Oxford Thesaurus

nucleus

nucleus noun 1 the nucleus of the international banking world: core, centre, central part, most important part, heart, nub, hub, middle, midpoint, eye, kernel, focus, focal point, pivot, crux; literary navel; rare omphalos. 2 a nucleus of non-party men were prepared to support him: small group, caucus, cell, coterie, clique, faction, cabal.

 

Sanseido Wisdom Dictionary

nucleus

nu cle us /n j úːkliəs /→nuclear 名詞 複 -clei /-kliàɪ /, ～es /-ɪz /C 1 〘物理 〙原子核 〘原子 (atom )の中心で, 中性子 (neutron )と陽子 (proton )から成る 〙.2 〘生物 〙細胞核 〘内部に遺伝子を含む 〙.3 〘音声 〙音節 [音調 ]核 .4 〘天 〙彗星 （すいせい ）核 .5 〘解剖 〙神経核 .6 (集団などの )中核, 中心, 中枢 (部 )(core )▸ the nucleus of the team チームの主要メンバー .