Ovian

Ovian is an adjective used in some scientific writings to denote a relation to eggs or ova. The term is formed from the Latin ova meaning eggs, with the suffix -ian indicating pertaining to. It is not a common term in modern genetics or anatomy, where more precise words such as ovarian (relating to ovaries) or oviparous (egg-laying) are preferred. In botany or paleontology, however, "ovian" occasionally appears in older or specialized texts to describe egg-related structures, processes, or materials, but its usage remains uncommon today.

Because of its similarity to the word avian, readers should not confuse ovian with avian, which denotes relation to birds. The two terms refer to different biological meanings and are not interchangeable. The potential for misinterpretation means that authors typically prefer more established terminology when describing eggs, ova, or egg-related biology.

Examples of context are mostly historical or specialized. An "ovian membrane" might be described in some accounts of fossil eggs or reproductive tissues, and "ovian development" could be used to refer to the development of ova within an organism, though "ovarian development" or other terms are usually clearer. In contemporary scientific writing, authors generally avoid relying on "ovian" and instead specify "ova," "ovules," or "egg formation" as appropriate.

See also: Ovum, Ova, Ovule, Ovarian, Oviparity, Avian.