kultivar

Etymology
Borrowing from, , , , and.

Verb

 * 1)  to cultivate: till land
 * 2)  to raise, as plant or crop, by tillage
 * 3)  to improve and develop by study and training of arts, letters, the mind, etc.
 * 4)  to pay assiduous attention to, to foster of friendship, acquaintance, etc.

Etymology
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Noun

 * 1) cultivar, variety: an animal or plant (or a group of such animals or plants) with characteristics causing it to differ from other animals or plants of the same species.