A young cat, especially before sexual maturity (reached at about seven months). / A young rabbit, rat, hedgehog, squirrel, fox, beaver, badger, etc. / A moth of the genus Furcula.

To give birth to kittens.

plural of kitten

Third-person singular simple present indicative form of kitten

The giving birth of kittens

present participle of kitten

simple past tense and past participle of kitten

plural of kittening

The quality of being a kitten.

(informal, physics) Any of several experiments that show the paradoxical effects of quantum mechanics on a small scale, especially one that shows an atom to be in two places at the same time.