the GNU version of the Collaborative International Dictionary of English
adj. Being or happening before birth.
The Century Dictionary and Cyclopedia
Previous to birth; of or pertaining to existence previous to birth.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. occurring or existing before birth
Word Usage
"Ultrasound -- a high-resolution, 3-D ultrasound performed by radiologists who specialize in prenatal diagnosis allows targeted evaluation of the fetus and any structural anomalies."