Greek "ortho-" for "straight, true, regular"
And Latin "odon" for "tooth".
source: etymonline.com
Some words that have the root "ortho" include orthodontist, orthopedic, orthography, and orthodoxy.
The root of orthodontist is "dont," which means "tooth." The prefix "ortho" means "correct" or "straight." So, an orthodontist makes teeth straight.
"Odonto" is Greek for "teeth". As in orthODONTist.
orthodontist, condone, donation, donor, pardon...
"Cele-" is not a root. There is a root kel- which has many different meanings.
vert as a root word means to turn.
orthodontist
The meanings of unknown words can often be inferred from their root words.
root as in the part of a plant that is underground
Each root word has a meaning. Root words can tell you the basic meanings of words you haven't seen.
"Orthodontists" is the plural of orthodontist.
The abbreviation for orthodontist is "Orthod."