ortho
See also: ortho-
English edit
Noun edit
ortho (countable and uncountable, plural orthos)
- (countable, chemistry) An isomer of a benzene derivative having two substituents adjacent on the ring.
- 1887 December 21, Thomas M. Morgan, “On Some Derivatives of Ortho-Nitro-Cinnamic Acid”, in Chemical News[269]:
- When the cinnamic acid had been nitrated the ortho was separated from the para, by suspending in alcohol and leading hydrochloric acid gas into the mixture : […] .
- 2009 February 27, P. Neumann et al., “Response to Comment on "Multipartite Entanglement Among Single Spins in Diamond"”, in Science[1], volume 323, number 5918, :
- Similarly, it also does not make sense to call the spin states of ortho and para hydrogen entangled.
- (countable, astronomy) A certain type of flat eyepiece.
- 1998, Terence Dickinson, NightWatch: A Practical Guide to Viewing the Universe, page 76:
- Orthos are excellent eyepieces, still preferred by some backyard astronomers for medium- and high-power applications, especially planetary observing.
- (countable, photography, dated) An orthochromatic plate.
- 1908 June, Charles F. Rice, “On the Use of Orthochromatic Plates”, in Photographic Times, page 174:
- Wherever the exposure is likely to be cut short— and this includes all high speed work and most portraiture — the ortho is not so suitable as the ordinary plate.
- (countable, imaging) An orthophoto.
- 2001, Drew Decker, GIS Data Sources, page 105:
- The typical orthophoto building process is a long one, however, and the photography that the orthos are based may be several years old before an orthophoto is ready for distribution.
- (uncountable, medicine) Orthopedics.
Anagrams edit
Dutch edit
Etymology edit
From orthodontist.
Pronunciation edit
Noun edit
ortho c (plural ortho's, diminutive orthootje n)
- (informal) Clipping of orthodontist, orthodontiste.