Keyboard shortcuts

Anywhere

⌘K: Search, go anywhere, switch course
/: The same, when not typing
?: Show this list
L: Start a session (on the home page)

In a session

Space: Turn the card over, then answer “Knew it”
1–4: Forgot · Hard · Knew it · Easy — or pick a meaning in a first test
0: I don’t know (in a first test)
Enter: Continue, check a typed answer, next round
K: I already know this word
P: Hear the word (again, on a card asked by ear)
C: Count a typed synonym as right
U: Undo the last answer

esc

Go to
Sign in
Create an account

↑↓ to move↵ to open⌘K anywhere

Kenne

Learn English, German or Russian from the words people actually say.

Learn

Dictionary
Topics
Sign in

About

Privacy policy
privacy@kenne.app

Definitions from Wiktionary (CC BY-SA 4.0) · example sentences from Tatoeba (CC BY 2.0 FR), credited to their authors.

limestone — English noun · Kenne

noun#8,114 by frequency

limestone

/ˈlaɪmˌstoʊn/

An abundant rock of marine and freshwater sediments; primarily composed of calcite; and occurring in a variety of forms, both crystalline and amorphous

plural: limestones

Meanings

1
An abundant rock of marine and freshwater sediments; primarily composed of calcite (CaCO₃); and occurring in a variety of forms, both crystalline and amorphous