Definition of pectoral

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< pectinesterase

pectoral arch >

pec·to·ral    (pktr-l) KEY 

ADJECTIVE:

1. Relating to or situated in the breast or chest: a pectoral muscle; the pectoral cavity.
2. Useful in relieving disorders of the chest or respiratory tract.
3. Worn on the chest or breast: a pectoral cross.

NOUN:

1. A muscle or organ of the chest.
2. A pectoral fin.
3. A medicine for relieving disorders of the chest or respiratory tract.
4. An ornament or decoration worn on the chest.

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ETYMOLOGY:
Probably Latin pectorlis, from pectus, pector-, breast. N., sense 4, Middle English from Old French, from Latin pectorle, breastplate, from neuter of pectorlis