polylysine
noun
A synthetic polypeptide consisting of lysine residues, used to facilitate adhesion of cells to microscope slides, etc.
Origin
1940s.
- play (or play it) safe (or for safety)
- play (or raise) hob
- play (or sing or practise) scales
- play (or use) the —— card
- play out
- play-party
- playpen
- play-play
- play politics
- play possum
- play-pretty
- playroom
- playscape
- playscheme
- playschool
- play-season
- play second fiddle
- play-seer
- playset
- playshop
- play silly buggers
- playsome
- play someone along
- play someone false
- play someone off