nubile |
of an age or physical condition suited to marriage; marriageable. [2 definitions] |
nucha |
the nape of the neck. [2 definitions] |
nuclear |
in physics and biology, of, relating to, or being an atomic nucleus. [3 definitions] |
nuclear emulsion |
any of several photographic emulsions used to record the tracks of charged subatomic particles. |
nuclear energy |
energy released from atomic nuclei, as in nuclear fission or fusion. |
nuclear family |
a self-contained unit consisting of a father and mother and their children living together in one household. (Cf. extended family.) |
nuclear fission |
the splitting of an atomic nucleus into lighter fragments, usu. two of comparable mass, with an accompanying release of energy, as in the explosion of an atomic bomb. |
nuclear fusion |
the fusion of atomic nuclei into a more massive nucleus, accompanied by a release of energy, as in the explosion of a hydrogen bomb. |
nuclear physics |
the branch of physics that deals with the forces, behaviors, and structures of atomic nuclei. |
nuclear reactor |
any of several devices that initiate and control a nuclear fission chain reaction to produce energy and material used for experimental and medical purposes. |
nuclear winter |
a hypothesized result of a major nuclear war, wherein massive cloud covers of dust and smoke would block out sunlight, lowering the earth's temperature and destroying most living things. |
nuclease |
any of several enzymes that facilitate the hydrolysis of nucleic acids. |
nucleate |
possessing a nucleus or nuclei. [4 definitions] |
nuclei |
pl. of nucleus. |
nucleic acid |
any of a group of essential, complex acids comprising the genetic material of all living cells; DNA or RNA. |
nucleolus |
a small spherical body in the nucleus of a cell, consisting of protein and RNA. |
nucleon |
a proton or neutron, esp. as a component of an atomic nucleus. |
nucleonics |
(used with a sing. verb) the science or technology having to do with atomic nuclei, esp. with nuclear energy. |
nucleophile |
a substance that donates electrons or has an affinity for atomic nuclei. |
nucleotide |
any of a class of esters on which nucleic acids are based. |
nucleus |
the central, essential, or highly concentrated part around which other parts are grouped. [4 definitions] |