Hoat-seⁿ seng-bu̍t-ha̍k (發生生物學; Eng-gú: developmental biology) sī tùi seng-bu̍t-thé seng-tióng kap hoat-io̍k kòe-têng ê gián-kiù ha̍k-kho. Hoat-seⁿ seng-bu̍t-ha̍k thàm-thó ûi-thoân-chú tùi sè-pau seng-tióng kap hun-hoà ê khòng-chè, ah chia-ê kòe-têng ē lâi tì-sú seng-bu̍t-thé hêng-sêng cho͘-chit kap khì-koan.