membrane filter
noun
A sheet or film of a polymer (originally collodion) that has pores of a uniform size, used especially for ultrafiltration.
Origin
1920s.
- sparely
- spare me days!
- spareness
- spare no effort
- spare no expense (or no expense spared)
- spare (or save) someone's blushes
- spare part
- spare-part surgery
- sparer
- spare rib
- spare someone's blushes
- spare the rod and spoil the child
- spare time
- spare tyre
- sparge
- sparger
- sparid
- sparing
- sparingly
- sparingness
- spark
- spark chamber
- Spark, Dame Muriel
- spark gap
- sparking plug