SINCE 1828
primary protective layer
nounDefinition of primary protective layer
: a layer developed within the separation layer in leaves of deciduous plants at the time of leaf fall that protects the exposed cells from desiccation and infection until the periderm forms
Comments on primary protective layer
What made you want to look up primary protective layer? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Word Puzzles
-
- Which answer pairs best with each of the following words? living, estate, club, music, road, mile
Can you spell these 10 commonly misspelled words?
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
Word Games
-
Word Puzzles
Challenge yourself with these word puzzles. Can you solve them all?
Take the quiz -
Where in the World? A Quiz
Do you know what languages these words come from?
Take the quiz -
Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz -
Syn City
Build a city of skyscrapers—one synonym at a time.
Play the game
Share primary protective layer
Resources for primary protective layer