inflection, inflectional, inflect: Inflection is the process by which one form of a word is changed to another form of the same word (or "inflected"), especially when the change is required in some particular context. For example the change from "derive" to "derives" changes one form of the verb to another form of the same verb and is required when the subject is third person singular; this change is thus inflectional. Inflection typically causes a relatively small semantic and/or syntactic change, compared to derivation. [Spanish: flexión, flexional/flexivo, flexionar]