Both. Latin and Greek inherited their words for "three" from a common ancestor (known as Proto-Indo-European), and in both languages "three" shows up as tri- in compounds. Examples:
The preffix tri- is from the Greek word treîs and tría.
It's a Latin based language, but in the scientific vocabulary, most of the words are Greek or of Greek origin.
latin
Serpentomorph is not a known word in the Greek or Latin language.
send
Assuming you mean cred- as in incredible, credibility, etc., it comes from the Latin word credere (to believe).
tri- has Latin, Greek as well as middle English origins.
Greek and Latin and Sanskrit.
The previous answer here was "greek". Unfortunately, this is incorrect; perhaps it was a guess? The correct answer is Latin; reference: http://en.wikipedia.org/wiki/Greek_and_Latin_roots_in_English .
tria 'tree-uh' is Greek for the number 3
The word "tri" originates from the Latin word "tres," meaning "three." It is commonly used as a prefix in English to indicate "three" or "threefold."
Trianle Tri is Latin for three, angle is of obscure derivation.
English has borrowed words from many different languages over the years, including Latin, French, and Germanic languages. This has enriched the language and given it a diverse vocabulary.
In Greek, "tri" (τρία) means "three."
A Greek word for a Galley, a vessel developed as a warship, with three rows of oars. The Latin word is Triremis, as in Tri for three, and Remus for Oars
Chemistry uses the Greek prefixes for moleclar geometries: mono-, di-, tri, tetra-, penta, hexa-, hepta- Quad belongs to the latin series: uni-, bi, ter, quad, quin, sxa, septa. Chemistry is not consistent however. In the nomenclature of organic molecules it switches from Greek- to-Latin: "pentane", hexane" (Greek) but"nonane" "decane" (Latin)
tricycle, triangle, triangular, trivia, trillion, tricep, triacid, triatomic, tri-city
I think it means three...