This is a word that was artificially coined by academics in order for there to be a “native Tagalog” equivalent to the foreign concept.
hapnayan
biology
Many Filipinos do not recognize the coinage and instead widely use the English word as is, pronounced as in the Tagalog transliteration bayólodyí.
In formal texts, the Spanish-derived term biyolohíya may be used.
KAHULUGAN SA TAGALOG
hapnayan: agham ng búhay