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sac¹

(săk)

A pouch or pouchlike structure in an organism, sometimes filled with fluid.

[French, bag, from Old French, from Latin saccus; see SACK¹.]

sac²

(săk)

n.
Baseball

1. A sacrifice fly. Also called sac fly.

2. A sacrifice bunt. Also called sac bunt.

SAC

abbr.

Strategic Air Command

Sac

(săk, sôk)

Variant of Sauk.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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