Definition of Ortho
1. Noun. (chemistry) An isomer of a benzene derivative having two substituents adjacent on the ring ¹
2. Noun. (astronomy) A certain type of flat eyepiece ¹
3. Noun. (photography dated) An orthochromatic plate ¹
4. Noun. (context: imaging) An orthophoto ¹
¹ Source: wiktionary.com
Definition of Ortho
1. pertaining to reproduction in a photograph of the full range of colors in nature [adj]
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Lexicographical Neighbors of Ortho
Literary usage of Ortho
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Condensed Chemical Dictionary: A Reference Volume for All Requiring by Chemical Catalog Company, Inc (1920)
"ortho- compound? are substitution products derived from benzol in which the ... The ortho- compounds will be found under the name of the compound, ..."
2. The Journal of Anatomy and Physiology by Anatomical Society of Great Britain and Ireland (1877)
"ON THE POISONOUS ACTIVITY OF VANADIUM IN ortho-, META-, ... as sodium pyro-vanadate, than sodium meta-vanadate, and still more so than as ortho-vanadate. ..."
3. The Fundamental Processes of Dye Chemistry by Hans Eduard Fierz-David (1921)
"In this case, however, the operation must be carried right through from start to finish without interruption as the sodium salt of ortho-cresol is ..."
4. Report of the Annual Meeting (1899)
"Yet these very small deviations have enabled the swarm of ortho-Leonids slowly ... It thus happens that on each return of the ortho-Leonids, the earth has ..."
5. Index to the Literature of the Spectroscope by Alfred Tuckerman (1888)
"ortho-TOLUIDINE. ption and measurement of the spectrum of ortho ... Ges., 16, 103G-G2; Jour. Chom. Soc., 44, 1121 (Abs.). ortho- ..."
6. The Electronic Conception of Valence and the Constitution of Benzene by Harry Shipley Fry (1921)
"In many substitution reactions isomeric ortho-, para-, and meta-di- substituted derivatives are formed simultaneously. The Brown and Gibson rule does not ..."