| spir | minute aquatic herbs floating on the water surface consisting of a shiny leaflike frond and 2-21 roots |
|---|---|
| spir | cosmopolitan except South America and New Zealand and some oceanic islands |
| spir | a recording of breathing made with a spirograph |
| spir | a measuring instrument for recording the depth and rapidity of breathing movements |
| spir | freshwater algae consisting of minute filaments containing spiral chlorophyll bands |
| spir | a measuring instrument for measuring the vital capacity of the lungs |
| spir | the use of a spirometer to measure vital capacity |
| spir | a synthetic corticosteroid (trade name Aldactone) used to treat hypertension |
| spir | the occurrence of a sudden discharge (as of liquid) |
| spir | move with increasing speed |
| spir | gush forth in a sudden stream or jet of liquids |
| spir | a small tropical cephalopod of the genus Spirula having prominent eyes and short arms and a many-chambered shell coiled in a flat spiral |