(computer science) A data structure that represents a forest (a set of rooted trees) and allows dynamic updates on the tree in logarithmic time.

The plant Buddleja globosa and the medicinal infusion made from it, it is native to Chile and Argentina

monkey puzzle tree (Araucaria araucana)

A monkey puzzle (tree).

Oecanthus mhatreae, a species of cricket.

Uresiphita ornithopteralis, a species of Australian and Zealandian moth.

(mathematics) A theorem stating that the set of finite trees over a well-quasi-ordered set of labels is itself well-quasi-ordered under homeomorphic embedding.

A tropical South American palm, Phytelephas macrocarpa, whose seed is used as a substitute for ivory; the tagua palm.

(aviation) The phenomenon where an aircraft's radar with limited directional capabilities receives strong echoes from the ground, swamping target signals and generating a triangular radar trace.

(Australia) Synonym of jam (“the tree Acacia acuminata”)