Origin of ortho
- a combining form occurring in loanwords from Greek, where it meant “straight,” “upright,” “right,” “correct” (orthodox) and on this model used in the formation of compound words (orthopedic).
- a combining form used in the name of that acid in a given series of acids that contains the most water (orthoboric acid).Compare meta-, pyro-.
- a combining form used in the names of the salts of these acids: if the acid ends in -ic, the corresponding salt ends in -ate (orthoboric acid (H3BO3) and potassium orthoborate (K3BO3)); if the acid ends in -ous, the corresponding salt ends in -ite (orthoantimonous acid (H3SbO3) and potassium orthoantimonite (K3SbO3)).
Origin of ortho-
Examples from the Web for ortho
Ortho Sol makes precision screws for the most delicate of construction projects: spinal fusion.Patients Screwed in Spine Surgery ‘Scam’
The Center for Investigative Reporting
November 3, 2014
The ortho molecules rotate with odd rotational quantum numbers, while the para molecules rotate with even quantum numbers.Unwise Child
Gordon Randall Garrett
The ortho- and para-nitro-benzoic acids can be obtained by oxidizing ortho-and para-nitro-cinnamic acids.
No; ordinary commercial Litho film or Ortho film that are generally available from large companies.Warren Commission (10 of 26): Hearings Vol. X (of 15)
The President's Commission on the Assassination of President Kennedy
The influence of position of an alkyl in the aromatic bodies is well shown in ortho-, para- and meta-derivatives.Poisons: Their Effects and Detection
Alexander Wynter Blyth
Mr. Tal- mage, true to the fawning, cringing spirit of ortho- doxy, lauds the living queen and cruelly maligns the genius dead.The Works of Robert G. Ingersoll, Vol. 5 (of 12)
Robert G. Ingersoll
before a vowel orth-
- straight or uprightorthotropous
- perpendicular or at right anglesorthoclastic
- correct or rightorthodontics; orthodox; orthography; orthoptics
- (often in italics) denoting an organic compound containing a benzene ring with substituents attached to adjacent carbon atoms (the 1,2- positions)orthodinitrobenzene Abbreviation: o- Compare oarsman Compare oarsman
- denoting an oxyacid regarded as the highest hydrated form of the anhydride or a salt of such an acidorthophosphoric acid See meta- (def. 6)
- denoting a diatomic substance in which the spins of the two atoms are parallelorthohydrogen See para- 1 (def. 8)
Word Origin and History for ortho
before vowels orth-, word-forming element meaning "straight, upright, rectangular, regular; true, correct, proper," now mostly in scientific and technical compounds, from Greek ortho-, stem of orthos "straight, true, correct, regular," from PIE *eredh- "high" (cf. Sanskrit urdhvah "high, lofty, steep," Latin arduus "high, steep," Old Irish ard "high").
- Straight; upright; vertical:orthotropic.
- Correct; correction:orthopsychiatry.
- Hydrated form of an acid or of its salts:orthoboric acid.
- Diatomic molecules in which the nuclei have the same direction of spin:orthohydrogen.
- Of or relating to one of three possible isomers of a benzene ring with adjacent carbon atoms having attached chemical groups:ortho-dibromobenzene.