The time it takes the Earth to rotate once is called a sidereal day. The actual rotation time is about 23 hours and 56 minutes. The mean solar day is longer, exactly 24 h â¦ ours, because of the distance the Earth moves in its orbit around the Sun.he actual rotation time is a little less, about 23 hours and 56 minutes. But the solar day is longer, almost exactly 24 hours, because of the distance the Earth moves in its orbit around the Sun. The Earth has to turn that extra 4 minutes to again directly face the Sun.
akinesia. 1. absence or loss of the power of voluntary movement. 2. the temporary paralysis of a muscle by the injection of procaine. akinesia alÂ´gera a condition characterized by generalized pain associated with movement of any kind.(Ä-ki-nÄ'sÄ-Ä, Ä-kÄ«-),. absence or loss of the power of voluntary movement. 2. the temporary paralysis of a muscle by the injection of procaine. akinesia alÂ´gera a condition characterized by generalized pain associated with movement of any kind. (Ä-ki-nÄ'sÄ-Ä, Ä-kÄ«-),
1 Slowness-bradykinesia (slow movement) and akinesia (inability to move) are common in people with Parkinson's disease. 2  This is a hypokinetic disorder characterized by hypokinesia or akinesia, rigidity, and a rhythmic fine tremor at the rate of 3-6 cycles per second. Slowness-bradykinesia (slow movement) and akinesia (inability to move) are common in people with Parkinson's disease. 2  This is a hypokinetic disorder characterized by hypokinesia or akinesia, rigidity, and a rhythmic fine tremor at the rate of 3-6 cycles per second.