(Latin: within, inside, on the inside)

Borrowed from late Latin intra-; closely related to inter-, "between". The use of intra- is largely a product of modern times, occurring in words of common and technical vocabulary, where once it was generally a term used in science and the academic world.

While some words are borrowings from Medieval and even Late Latin, few if any come from Classical Latin.

—Based on information from Barnhart Dictionary of Etymology
A reference to the real nature of a thing; inherent; essential.

Cross references of word families related directly, or indirectly, to: "internal organs, entrails, inside": ent-; enter-; fistul-; incret-; inter-; splanchn-; viscer-.