See Also: companion cell(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
companion(2)(dictionary)
companion(dictionary)
companion(1)(dictionary)
COMPANION, dom(law)
companion vein(medicine)
Companion bonds(money)
Companion of Honour, the(dictionary)
boon companion(dictionary)

companion cell (medicine)


companion cell
<plant biology> Relatively small plant cell, with little or no vacuole, found adjacent to a phloem sieve tube and originating with the latter from a common mother cell.

Thought to be involved in translocation of sugars in and out of the sieve tube.