American Heritage Dictionary of the English Language, 5th Edition
From Latinfalc- (stem of falx (“sickle”)) + English-i- + -form (“-shaped”).
Falciform Sentence Examples
The attachment of the falciform ligament is continued down it.
Near the mid line of the body, and at right angles to the last, another reflection, the falciform ligament, runs forward, and the line of attachment of this indicates the junction of the right and left lobes of the liver.