placentation
nounC1Định nghĩa theo từ loại
Danh từ
nounPlural noun:
placentations
- 1.
(countable, uncountable)(biology) The local fusion of the embryonic stage of an animal to its parent for physiological exchange to promote the growth and development of the young; involves a placenta in non-egglaying mammals.
- 2.
(countable, uncountable)(botany) The manner in which the seeds are attached to the placenta within the ovary locules.
Parietal placentation occurs in the Brassicaceae family.
Từ liên quan
Cùng gốc / liên quan
malplacentation
Từ có viền nét liền là đã có mục từ; viền nét đứt là chưa có trong dữ liệu.