The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
photosynthesis
1 ENTRIES FOUND:
photosynthesis
(noun)
photosynthesis
/ˌfoʊtoʊ
ˈ
sɪnθəsəs/
noun
photosynthesis
/ˌfoʊtoʊ
ˈ
sɪnθəsəs/
noun
Britannica Dictionary definition of PHOTOSYNTHESIS
[
noncount
]
biology
:
the process by which a green plant turns water and carbon dioxide into food when the plant is exposed to light
ASK THE EDITOR
Do we use me neither and me either only in the negative sense? Or I still can use me either in the positive sense? For example, if someone says "I love this meal" can I say "me either"?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
gooey
:
wet and sticky (informal)
Learn More »