Meristem


[mer-uh-stem] /ˈmɛr əˌstɛm/

noun, Botany.
1.
embryonic tissue in plants; undifferentiated, growing, actively dividing cells.
/ˈmɛrɪˌstɛm/
noun
1.
a plant tissue responsible for growth, whose cells divide and differentiate to form the tissues and organs of the plant. Meristems occur within the stem (see cambium) and leaves and at the tips of stems and roots
n.

“growing cellular tissues of plants,” 1862, formed irregularly from Greek meristos “divided, divisible” (from merizein “to divide, distribute,” from meros “a part, a share;” see merit (n.)) + ending from xylem, etc.
meristem
(měr’ĭ-stěm’)
Plant tissue whose cells actively divide to form new tissues that cause the plant to grow. The originally undifferentiated cells of the meristem can produce specialized cells to form the tissues of roots, leaves, and other plant parts. The meristem includes the growing tips of roots and stems (the apical meristems) and the tissue layer known as cambium.

meristematic adjective (měr’ĭ-stə-māt’ĭk)
meristem [(mer-i-stem)]

The region on a plant where division of cells (and hence growth) occurs. Usually, meristems are found in the shoots and root tips, and places where branches meet the stem. In trees, growth occurs in the cambium — the layer just beneath the bark.

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