释义 |
xylem ray in American English a transverse sheet of soft, living cells wholly within the wood or xylem and extending from the pith of a stem to the phloem xylem ray in American Englishnouna vascular ray extending into or located entirely within the secondary xylem Also called: wood ray Word origin [1870–75 ]This word is first recorded in the period 1870–75. Other words that entered Englishat around the same time include: Mafia, billing, giveaway, immobilize, onshore |