| SI | the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day |
|---|---|
| SI | 1/24 of a sidereal day |
| SI | period between successive conjunctions with a star, 27.322 days |
| SI | measured by the diurnal motion of stars |
| SI | the time for the earth to make one complete revolution around the sun, relative to the fixed stars |
| SI | a meteorite consisting principally of nickel and iron |
| SI | iron ore in the form of ferrous carbonate |
| SI | genus of woolly aromatic herbs or subshrubs or shrubs of Mediterranean region |
| SI | an erythroblast having granules of ferritin |
| SI | refractory anemia characterized by sideroblasts in the bone marrow |
| SI | refractory anemia characterized by sideroblasts in the bone marrow |
| SI | refractory anemia characterized by sideroblasts in the bone marrow |