principal parts
noun (used with a plural verb) Grammar.
a set of inflected forms of a form class from which all the other inflected forms can be derived, as sing, sang, sung; smoke, smoked.
Origin of principal parts
First recorded in 1865–70
Words nearby principal parts
British Dictionary definitions for principal parts
principal parts
pl n
grammar
the main inflected forms of a verb, from which all other inflections may be deduced. In English they are generally considered to consist of the third person present singular, present participle, past tense, and past participle
the sides and interior angles of a triangle