noun
a solid mass of cells that forms at an early stage of embryonic development and consists of cells in a spherical arrangement
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The morula is a stage of embryonic development consisting of a solid ball of cells.
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The morula is like a tiny ball of cells in the early stages of development.
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That morula stage is when things start getting interesting in the embryo.
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Just like a morula, sometimes we need to stick together to form something greater.