Submitted by Anonymous (not verified) on Thu, 10/26/2017 - 17:01 Lemma: lengthenNgram Count: 1Wordnet ID: 76669Starts with letter: YesIndefinite Article: aGoogle Ngram Count: 670493Sense count: 2Contained in other ngrams: 2Hierarchy: NounPresent ParticipleForms: lengthenedlengthensForms Count: 2