plural of fiefholding

(transitive, phonetics) To change to a diphthong, as by inserting or removing a vowel. / (intransitive, phonetics) To become a diphthong.

plural of morphadyke

(calculus) A generalization of the fundamental theorem of calculus to the two-dimensional plane, which states that given two scalar fields P and Q and a simply connected region R, the area integral...