A period of pregnancy, or a time for the development of an idea
... A strange idea 
... of pregnancy after which abortion is unlawful (because the foetus has a right to 
life), ... this covers a lengthy period of time; tissue type separation doesn't seem to
... [DOC] [TLE] Critical period - Wikipedia [PAR] In developmental psychology and developmental biology, a critical period is a 
maturational ... For example, the critical period for the development of a human 
child's ... states that the first few years of life constitute the time during which 
language ...