| RAC | a canal for a current of water |
|---|---|
| RAC | (Old Testament) the second wife of Jacob and mother of Joseph and Benjamin |
| RAC | United States biologist remembered for her opposition to the use of pesticides that were hazardous to wildlife (1907-1964) |
| RAC | United States biologist remembered for her opposition to the use of pesticides that were hazardous to wildlife (1907-1964) |
| RAC | mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction |
| RAC | move by degrees in one direction only, as of toothed wheels |
| RAC | the series of vertebrae forming the axis of the skeleton and protecting the spinal cord |
| RAC | axis of a compound leaf or compound inflorescence |
| RAC | a not uncommon congenital defect in which a vertebra is malformed |
| RAC | of or relating to or resulting from rickets |
| RAC | childhood disease caused by deficiency of vitamin D and sunlight associated with impaired metabolism of calcium and phosphorus |
| RAC | inflammation of the vertebral column |