One of the mysteries of the English language finally explained.
1Embryology and Anatomy. Situated or occurring in front of the anterior end of the notochord.
2Biology. Occurring prior to the evolution of the notochord or of the chordates; lacking a notochord. Compare prechordaterare.
Late 19th century; earliest use found in Philosophical Transactions of the Royal Society of London. From pre- + chorda + -al.
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