2Botany any of several types of cell involved in plant movements, usually distinguished by the ability to undergo rapid changes in turgor and by relatively elastic walls.
Origin
Late 19th century; earliest use found in Proceedings of the Royal Society of London.
Definition of motor cell in US English:
motor cell
noun
1Physiology a motor neuron.
2Botany any of several types of cell involved in plant movements, usually distinguished by the ability to undergo rapid changes in turgor and by relatively elastic walls.
Origin
Late 19th century; earliest use found in Proceedings of the Royal Society of London.