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

abortus \abort"us\ .ab^ort"u^s, n.
   a fetus which has been aborted; same as abortion2.
   pjc
see also:
abortion2 

[2] : WordNet (r) 2.0

abortus
     n : a human fetus whose weight is less than 0.5 kilogram when
         removed or expelled from the mother's body

[3] : Bouvier's Law Dictionary, Revised 6th Ed (1856)

abortus. the fruit of an abortion; the child born before its time, incapable
of life. see abortion; birth; breath; dead born; gestation; life.

Abortus >> A Words
Abortus, definition of term: Abortus
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