Dictionary

lengthen

verb length·en \ˈleŋ(k)-thən, ˈlen(t)-\

: to become longer

: to make (something) longer

length·enedlength·en·ing \ˈleŋ(k)th-niŋ, ˈlen(t)th-; ˈleŋ(k)-thə-, ˈlen(t)-\

Full Definition of LENGTHEN

transitive verb
:  to make longer
intransitive verb
:  to grow longer
length·en·er \ˈleŋ(k)th-nər, ˈlen(t)th-; ˈleŋ(k)-thə-, ˈlen(t)-\ noun
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Examples of LENGTHEN

  1. The days lengthened with the approach of spring.
  2. Proper care will lengthen the life of the engine.
  3. lengthen a pair of trousers

First Known Use of LENGTHEN

14th century

Synonym Discussion of LENGTHEN

extend, lengthen, prolong, protract mean to draw out or add to so as to increase in length. extend and lengthen imply a drawing out in space or time but extend may also imply increase in width, scope, area, or range <extend a vacation> <extend welfare services> <lengthen a skirt> <lengthen the workweek>. prolong suggests chiefly increase in duration especially beyond usual limits <prolonged illness>. protract adds to prolong implications of needlessness, vexation, or indefiniteness <protracted litigation>.
LENGTHENING Defined for Kids

lengthen

verb length·en \ˈleŋ-thən\
length·enedlength·en·ing

Definition of LENGTHEN for Kids

:  to make or become longer <lengthen a dress>

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