Definition of "lengthy"

They traced the ancient lineages of two species to reveal the insects' lengthy history of asexual reproduction.

2011 July 19, Ella Davies, “Sticks insects survive one million years without sex”, in BBC‎

If, in addition to being a lengthy preacher, he had also been a Rev. Mr. Mumbles or a Rev. Dr. Drone, the penance thus endured by his people would have been intolerably severe.

1863, John Cumming, Driftwood, seaweed and fallen leaves, volume 1, page 92