LENGTH'EN, v.t. length'n.1. To extend in length; to make longer; to elongate; as, to lengthen a line.2. To draw out or extend in time; to protract; to continue in duration; as, to lengthen life. The days lengthen from December to June.3. To extend; as, to lengthen a discourse or a dissertation.4. To draw out in pronunciation; as, to lengthen a sound or a syllable. This verb is often followed by out, which may be sometimes emphatical, but in general is useless.What if I please to lengthen out his date?
LENGTH'EN, v.i. To grow longer; to extend in length. A hempen rope contracts when wet, and lengthens when dry.