| TAC | poplar of northeastern North America with broad heart-shaped leaves |
|---|---|
| TAC | genus of tropical plants with creeping rootstocks and small umbellate flowers |
| TAC | perennial herb of East India to Polynesia and Australia cultivated for its large edible root yielding Otaheite arrowroot starch |
| TAC | perennial herb of East India to Polynesia and Australia cultivated for its large edible root yielding Otaheite arrowroot starch |
| TAC | small family of tropical herbs |
| TAC | measuring instrument for indicating speed of rotation |
| TAC | a theodolite designed for rapid measurements |
| TAC | bristly fly whose larvae live parasitically in caterpillars and other insects |
| TAC | parasites on other insects |
| TAC | scientific instrument used by psychologists |
| TAC | a graphical record of speed and distance produced by a tachograph |
| TAC | a tachometer that produces a graphical record of its readings |