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That department of the science of metaphysics which investigates and explains the nature and essential properties and relations of all beings, as such, or the principles and causes of being.

A treatise upon thunder.

The science relat J. Bentham.

The science which treats of the teeth, their structure and development.

The science which treats of the ancient life of the earth, or of fossils which are the remains of such life.

Pertaining to deontology.

One versed in deontology.

The science of real as distinguished from phenomenal being; ontology; also, the science of being, with reference to its abstract and universal conditions, as distinguished from the science of determined or concrete being; the science of the conceptions and relations which are necessarily implied as true of every kind o…

of nature as a whole, incuding the sciences of botany, zoölogy, geology, mineralogy, paleontology, chemistry, and physics. In recent usage the term is often restricted to the sciences of botany and zoölogy collectively, and sometimes to the science of zoology alone. -- Natural law, that instinctive sense of justice a…

Of or pertaining to ontology.

One who is versed in or treats of ontology. Edin. Rev.

An old name for paleontology.

A combining form meaning old, ancient; as, palearctic, paleontology, paleothere, paleography. [Written also palæo-.]

That branch of paleontology which treats of fossil plants.

Of or pertaining to paleontology. -- Pa`le*on`to*log"ic*al*ly, adv.

One versed in paleontology.

The branch of paleontology which treats of fossil birds.

The science of extinct animals, a branch of paleontology.