As adjectives the difference between prelal and prelab
is that prelal is (obsolete) of or relating to printing; typographical while prelab is before a laboratory session.
prelal
English
Adjective
(
-)
(obsolete) Of or relating to printing; typographical.
- (Fuller)
(
Webster 1913)
prelab
English
Adjective
(
-)
Before a laboratory session.
- prelab questions in a textbook