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] |
nuclide |
a category of atoms, all of which have the same number of protons and neutrons and the same nuclear energy. [2 definitions] |
nude |
not wearing clothes; naked. [5 definitions] |
nudge |
to push gently or touch, esp. with the elbow and esp. so as to attract attention. [4 definitions] |
nudism |
the belief in or the practice of not wearing clothes, esp. with others of both sexes in designated settings. |
nudity |
the condition or fact of being unclothed; nakedness. |
nuée ardente |
a thick volcanic cloud that explodes and pours down the sides of a volcano. |
nugatory |
having little or no real importance or value; trifling. [2 definitions] |
nugget |
a small, solid lump, esp. of a precious metal such as gold. [2 definitions] |
nuisance |
someone or something that is annoying or troublesome. |
nuisance tax |
a tax that is considered to be a nuisance because it is levied on small, separate purchases and paid by the consumer. |
Nukualofa |
the capital of Tonga. |
null |
not having any legal force; invalid. [4 definitions] |
nullification |
the act of nullifying, or the state of being nullified. |
nullify |
to cause or declare to have no legal force or effect; make null; invalidate. [2 definitions] |
nullity |
the condition or quality of being or amounting to nothing; nothingness; invalidity. [2 definitions] |
numb |
not able to feel physical sensation or move normally, esp. because of cold. [3 definitions] |