The English word can be transliterated into Tagalog as náy·tro·dyén.
nitrogen
Most Filipinos simply use the English term as is.
KAHULUGAN SA TAGALOG
naytrodyen: walang kulay, walang amoy, at gaseous na elemento na bumubuo ng 4/5 ng volume ng atmospera
atomic number 7, simbolo N
possible attempt at transliteration: naytrogin