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Meaning of right-branching

right-branch•ing

Pronunciation: (rīt'bran"ching, -brän"-), [key]
— adj. Ling.
  1. (of a grammatical construction) characterized by greater structural complexity in the position following the head, as the phrase the house of the friend of my brother; having most of the constituents on the right in a tree diagram (opposed to left-branching).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.