MORPHOLOGY: a special type of word formation rule (adjustment rule)
proposed by Aronoff (1976) to account for allomorphic variation. Allomorphy rules
apply to the output of the word formation rules, and instantiate phonological
changes in certain morphemes in the immediate environment of some other morphemes.
EXAMPLE: Aronoff assumes for English an allomorphy rule which changes the
verbal suffix -fy (amplify, electrify) into -fic-
if it is followed by the noun-forming suffix -ation (amplification,