of extreme importance; pivotal or decisive

a physical button or key on an electronic device or keyboard

the quality or state of being critical or essential to the outcome or function of something.

a key or combination of keys providing quick access to a specific function within a computer program

a piano key

double bond (chemistry)

single bond (chemistry)

disulfide bond (chemistry)

covalent bond (chemistry)

the space bar on a computer keyboard

an electrical component designed to connect or break the flow of current in a circuit

(engineering) keyway; key slot

enter key or return key on a computer keyboard

A chemical bond formed between the carboxyl group of one amino acid and the amino group of another in a protein chain.

ionic bond (chemistry)

chroma key, bluescreen, or greenscreen video editing technique used for compositing two images together

a covalent chemical bond in which three pairs of electrons are shared between two atoms

backspace (keyboard)

arrow key (on a computer keyboard)

the right arrow key on a computer keyboard

key performance indicator (KPI)

valence bond (chemistry)

sleep mode button (on the remote control of an air conditioner)

to take caution as the key; to proceed very carefully

To key in, input, or enter text.

(slang) to discuss politics online

down arrow key on a computer keyboard

up arrow key (on keyboard)

keyboard instrument (piano, organ etc)

key travel (of a keyboard)

the sound produced when pressing a key on a keypad, keyboard, or touchscreen

keyboard and mouse (abbr. for [[键盘|鍵盤|jian4 pan2]] and [[鼠标|鼠標|shu3 biao1]])

the left arrow key on a keyboard

a harpsichord

A key or combination of keys on a computer keyboard that provides quick access to a specific function or command.

a button on a device or telephone used to initiate a call or signal to someone