inter-, intero-

(Latin: between; among, mutually, together; on the inside, internal)

Although abstracted from the many compounds in which it entered English, the form inter- was not generally considered a living prefix in English until the 1400s.

During the later period of Middle English many words borrowed in the Old and Middle French forms entre-, enter- began to be consciously respelled with Latin inter-; although vestiges of the older French borrowings are found in entertain and enterprise.

The living prefix inter- is now freely added to almost any element in English to create such formations with the meaning of "between" and "among". The words formed by intra- are closely related to this inter- prefix; in fact, they both apparently came from the same Latin source.

—Based on information from Barnhart Dictionary of Etymology
ad interim; ad int., a.i.
For the interval, temporarily, in the meantime.
anterointernal
Caput inter nubila condit.
She hides her head among the clouds.

Who is she that hides her head in the clouds? The line is from Virgil, who had the personified Fame in mind as the subject of the verb condit. For most people, fame never emerges from behind the clouds; instead, most people labor in obscurity, waiting for their few minutes of fame that never comes.

gluteofemoral
1. A reference to to the buttock and the thigh.
2. Pertaining to a gluteal muscle and the thigh or the femoral bone.
inter canem et lupum
Between the dog and the wolf, twilight.
inter vivos
Among the living; between living people.

A kind of trust created during the lifetime of the trustor. This legal phrase is also used to designate a gift that is given by one living person to another, taking effect during their life-times.

interact
interaction
interactive
interactively
interamnian
Lying between rivers, like Mesopotamia; enclosed by rivers.
interannual
interborough
interbreed
intercalary

Related "together" units: com-; greg-; struct-.

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