Pronunciation: (ā"sin-tak'tik), [key]
—adj. Gram.(of compounds)
consisting of morphemes that are combined differently from their mode of combination as separate words in a phrase, as bookstore, which is an asyntactic compound, while the same elements are combined syntactically in store for books.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.