Aptitude
Pronunciation : Apt"i*tude
Part of Speech : n.
Etymology : [F. aptitude, LL. aptitudo, fr. L. aptus. See Apt, and cf. Attitude.]
Definition : 1. A natural or acquired disposition or capacity for a particular purpose, or tendency to a particular action or effect; as, oil has an aptitude to burn. He seems to have had a peculiar aptitude for the management of irregular troops. Macaulay.
2. A general fitness or suitableness; adaptation. That sociable and helpful aptitude which God implanted between man and woman. Milton.
3. Readiness in learning; docility; aptness. He was a boy of remarkable aptitude. Macaulay.
Source : Webster's Unabridged Dictionary, 1913