Englishfor English speakers
convection
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noun
the transfer of heat through a fluid (liquid or gas) caused by molecular motion
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noun
(meteorology) the vertical movement of heat or other properties by massive motion within the atmosphere
cell
Noun
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A cell is a room in a jail where prisoners are kept.
He was arrested and kept in a small cell for one day.
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A cell is a unit of a living organism.
A plant cell has a cell wall.