- Having length; long and overextended, especially in time rather than dimension.
2011 July 19, Ella Davies, “Sticks insects survive one million years without sex”, in BBC:
- They traced the ancient lineages of two species to reveal the insects' lengthy history of asexual reproduction.
- a lengthy text
- a lengthy discussion
- a laborious and lengthy process
- She died last night after a lengthy illness.
- They received lengthy prison terms.