American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Of or relating to an optically active chemical that rotates the plane of polarized light to the left, or counterclockwise: Only levorotatory amino acids are biologically active.
Century Dictionary and Cyclopedia
- Same as levogyrate.
GNU Webster's 1913
- adj. (Chem. & Physics) Turning or rotating the plane of polarization of light towards the left; -- applied to crystals and compounds exhibiting optical activity, such as levulose, left-handed quartz crystals, etc. Opposite of
- adj. rotating to the left
- levo- + rotatory (Wiktionary)
““At the molecular level, it would appear to be a levorotatory form of the Gnawing bacillus,” Selar began.”
“Oil from the wild roots of North India is said to be highly levorotatory (rotates the plane of polarized light to the left), whereas that from the cultivated roots from South India is dextrorotatory (rotates polarized light to the right).”
“Shock waves blew most of the atmosphere off, leavin 'the rest thin enough that chemical evolution could go on, not too unlike the Terran-photosynthesis and so forth, though the amino acids that developed happened to be mainly dextro -' stead of levorotatory.”
“The '265 patent discusses the unusual stereoselectivity of the biological properties as between the dextrorotatory and the levorotatory enantiomers.”
“Believing that there was no advantage to separation of the enantiomers of thienopyridines, and no other racemates were separated until November 1985 when Sanofi then determined the biological properties of the enantiomers of PCR 4099, and found that they had the rare characteristic of "absolute stereoselectivity": the dextrorotatory enantiomer provided all of the favorable antiplatelet activity but with no significant neurotoxicity, while the levorotatory enantiomer produced no antiplatelet activity but virtually all of the neurotoxicity.”
These user-created lists contain the word ‘levorotatory’.
Thanks to everyone who added to this list. (I moved it to a new URL, so all the words added on the first day are credited to me—sorry about that.)
(Here’s the original list with a slo...
These words either descend from a word or root referring to the left side or direction (e.g., “sinister”) or refer to the concept themselves. Many, but not all, have negative connotations.
on the left; counterclockwise
A roster of adjectives that infrequently surface in typical conversation and writing. Many are dredged from scientific or other technical jargon or sieved from examples of disused archaic forms.
words in the nature of double spirals
AKA: Opposites attract.
created to break clichés and cause temporary floundering
Looking for tweets for levorotatory.