microprism
noun
mi·cro·prism ˈmī-krə-ˌpri-zəm 
: a usually circular area on the focusing screen of a camera that is made up of tiny prisms and that causes the image in the viewfinder to blur if the subject is not in focus
Word History
First Known Use
1962, in the meaning defined above
- (sitting) in the catbird seat
- (someone's) courage fails him/her
- (somewhere) in the region of
- (the right of) first refusal
- (the) back of beyond
- (the) cat has someone's tongue
- (the) crowd
- (the) deuce
- (the) goods
- (the) herd
- (the) last someone heard
- (the) last someone saw
- (the) masses
- (the) mob
- (the) more fool one
- (the) people
- (the) populace
- (the) public
- (the) worse for wear
- (there) but for the grace of God (go I)
- (what) with one thing and another
- (you're) damned if you do and damned if you don't
- -abilia
- -abilities
- -ably