SINCE 1828
protoxylem
noun
pro·to·xy·lem
| \ ˌprō-tə-ˈzī-ləm
, -ˌlem\
, -ˌlem\
Definition of protoxylem
: the first-formed xylem developing from procambium and consisting of narrow cells with annular, spiral, or scalariform wall thickenings
Keep scrolling for more
Comments on protoxylem
What made you want to look up protoxylem? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Finance Words Quiz
-
- The etymology of mortgage is related most closely to which two words?
Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share protoxylem
Resources for protoxylem