holophrasis
holophrase

For example, the single Greek word pneuma (which can be variously translated as "breath", "spirit", or "wind") reflects, Barfield argues, the primordial unity of these concepts of air, spirit, wind, and breath, all included in one "holophrase".

A holophrase may resemble an interjection, but whereas an interjection is linguistic, and has a specific grammatical function, a holophrase is simply a vocalization memorized by rote and used without grammatical intent.