Latin and Greek Roots of English Vocabulary: An Online Manual: Lesson 37 [orth-]

August 1, 2010

Root

  

Original Meaning/

Usage Notes

English Derivatives

  

Vocabulary

  

(base)  

orth- [from Greek]

 

(adjective)

correct, right

 

   

orthodontia [literally, ‘tooth correctness;’ the specialty in dental medicine that corrects tooth irregularities, e.g., by braces.]

orthodox

orthogonal [literally, ‘pertaining to right angles;’ pertaining to, or composed of, right angles.]

orthography

orthopedics [literally, ‘correct child-educating skill;’ the medical specialty that deals with disorders of the skeletal system and associated musculature.]

orthostatic [literally, ‘pertaining to standing upright.’]

   

orthodox (adjective) [literally, ‘correct opinion;’ pertaining to, or practicing, traditionally accepted beliefs and practices, especially of a religion.]

orthography (noun) [literally, ‘correct writing;’ the branch of grammar that studies the rules of correct spelling.]

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