From Longman Dictionary of Contemporary Englishlife formˈlife form noun [countable] HBa living thing such as a plant or animal life forms on other planets
Examples from the Corpus
life form• The people on the ship have to create an artificial life form because their computer has failed.• It is, therefore, the complementary life form to the animals of Earth.• In the biosphere, the more elaborate the structure, the higher the life form. 