ὀρθός
orthós
“straight, correct”
9 words in English grow from this root.
Anorthite
Earthἀν-an-
“not straight”
Orthoclase
Earthὀρθόςorthós
“right-angled breaking”
Orthodox
Faithὀρθόςorthós
“right opinion”
Orthodoxy
Faithὀρθόςorthós
“right opinion”
Orthogonal
Numberὀρθόςorthós
“right-angled”
Orthography
Wordsὀρθόςorthós
“correct writing”
Orthopedic
Medicineὀρθόςorthós
“straight child”
Orthopedics
Medicineὀρθόςorthós
“straightening of children”
Orthotic
Medicineὀρθόςorthós
“straightening device”