Definify.com
Webster 1913 Edition
Enlengthen
En-length′en
,Verb.
 T.
 To lengthen. 
[Obs.] 
Definition 2025
enlengthen
enlengthen
English
Verb
enlengthen (third-person singular simple present enlengthens, present participle enlengthening, simple past and past participle enlengthened)