ceph·a·lex·in 
(sĕf′ə-lĕksĭn)
(sĕf′ə-lĕksĭn)n.
A semisynthetic cephalosporin antibiotic, C16H17N3O4S, used especially in the treatment of respiratory and urinary tract infections.
[Blend of CEPHAL(OSPOR)IN and ex- (probably alteration of HEX(A)-, from the six carbon atoms comprising the phenyl group that distinguishes it from cephalosporin).]
- linebacker
- linebacking
- line breeding
- linecaster
- linecasting
- line cut
- line dance
- line dancer
- line drawing
- line drive
- line engraving
- Line Islands
- line item
- line-item veto
- lineman
- linen
- line of credit
- line officer
- line of force
- line of scrimmage
- line of sight
- lineolate
- line (one's) pockets
- line one's pockets
- line-out