— obsolescently , adv.
/ob'seuh les"euhnt/ , adj.
1. becoming obsolete; passing out of use, as a word: an obsolescent term.
2. becoming outdated or outmoded, as machinery or weapons.
3. Biol. gradually disappearing or imperfectly developed, as vestigial organs.
[ 1745-55; obsolescent- (s. of obsolescens, prp. of obsolescere to fall into disuse). See OBSOLETE, -ESCENT ]