SINCE 1828
oka
nounless common spelling of oca
: either of two South American wood sorrels (Oxalis crenata and O. tuberosa) cultivated for their edible tubers
also
: the tuber of an oca
Oka
geographical name
\ ō-ˈkä
\
\
Definition of Oka (Entry 2 of 2)
1
river 530 miles (853 kilometers) long in south central Russia in Asia flowing north from the Sayan Mountains into the Angara River
2
river 919 miles (1479 kilometers) long in central Russia in Europe flowing into the Volga River
Comments on oka
What made you want to look up oka? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
A Green Quiz
-
- What is the best definition of green-eyed monster?
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 unabridgedWords at Play
Ask the Editors
Word Games
-
A Green Quiz
How many questions can you answer about the word "green"?
Take the quiz -
Return of Name that Color!
Additional colors! More obscure than before!
Take the quiz -
Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz -
Bee Cubed
Listen to the words and spell through all three levels.
Play the game
Share oka
Resources for oka