As a noun xylem
is a vascular tissue in land plants primarily responsible for the distribution of water and minerals taken up by the roots; also the primary component of wood.
As an abbreviation pH is
the negative of the logarithm to the base 10 of the concentration of hydrogen ions, measured in moles per liter; a measure of acidity or alkalinity of a substance, which takes numerical values from 0 (maximum acidity) through 7 (neutral) to 14 (maximum alkalinity).
xylem
English
Noun
(
en noun)
(botany) A vascular tissue in land plants primarily responsible for the distribution of water and minerals taken up by the roots; also the primary component of wood.
Derived terms
* metaxylem
* protoxylem
See also
* phloem
ph
Symbol
(head)
(chemistry) Measure of the acidity or basicity of an aqueous solution.
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