[1] : The Collaborative International Dictionary of English v.0.48

laevorotatory \lae"voro"tatory\, a.
   same as levorotatory. cf. dextrorotatory.
   1913 webster
see also:
levorotatory dextrorotatory 

[2] : The Collaborative International Dictionary of English v.0.48

levorotatory \le`voro"tatory\ -r=o"t.at-ory^, a.
   levo- + rotatory. 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 dextrorotatory. written
   also laevorotatory.
   1913 webster +pjc
see also:
dextrorotatory laevorotatory 

Laevorotatory >> L Words
Laevorotatory, definition of term: Laevorotatory
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