What does Mature Primigravida mean?

Answer 1

Primagravida means a women who is pregnant for the first time. Mature primagravida, I've never heard of that, but I would assume that it is referring to a mature women, mature reproductively .

Term used for a woman over the age of 35 having a child

Answer 2

Any woman who, for the first time (primi) becomes pregnant (gravid) after the age of 35 (elderly for pregnancy, traditionally speaking) is, medically speaking, termed an elderly primigravida. This term implies an increased risk of both preganancy related complications and pregnancy outcomes (e.g. risk of Down syndrome baby).