hadrome

English

Etymology

From Ancient Greek ἁδρός (hadrós, “thick”) +‎ -ome.

Noun

hadrome (plural hadromes)

1. The portion of the mestome that transports fluids.
   • 1896, Herman Theodor Holm, Botanical Pamphlets and Reprints - Volume 1, page 508:

     The cambium commences then to develop new groups of leptome outwards and new groups of hadrome inwardly.

   • 1931, John Merle Coulter, Charles Reid Barnes, Henry Chandler Cowles, A textbook of botany for colleges and universities - Volume 3, page 210:

     In the bundle the hadrome seems to have the place of advantage.

2. The rudimentary xylem in a cryptogam.
   • 1883, Frank Crisp, Francis Jeffrey Bell, Journal of the Royal Microscopical Society, pages 537–538:

     This physiological relationship explains the remarkable facts that where a number of hydroids lie close together the hydrome is regularly permeated by threads of starch, and that all vascular cryptogams possess a hadrome.