the most important part of something; the crux or turning point of a situation

The set of keys on a piano, organ, computer, typewriter, or telephone used to input information or produce sound.

a core term appearing frequently in a work or listed at the beginning of an article to represent its main concepts; a core term used in information retrieval or database searches to find relevant material

button or key on a device like a piano, computer, or appliance

key; critical; crucial

(computer) shortcut key or hotkey

a significant word or phrase that captures the core concept of a text; also refers to terms used in information retrieval or programming

a key on a piano, organ, or other keyboard instrument

chemical bond in which a hydrogen atom provides a bridge between two electronegative atoms

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

A chemical bond in which two atoms share one pair of electrons.

The strong force of attraction that holds atoms together in a molecule or crystal

a chemical bond consisting of two sulfur atoms linked together, common in protein structures

A type of chemical bond formed when two atoms share their outer electrons

the space bar on a computer keyboard

a device used to connect, disconnect, or switch electric circuits, consisting of contact springs and a key lever; specifically refers to the key used for sending Morse code in telegraphy

the button on a device or in a software interface used to temporarily stop playback or activity

(machinery) a slot or groove for a key in a mechanical part; key slot; key seat

(computing) enter key or return key on a computer keyboard; used to execute commands or start a new line of text

The chemical bond formed between the amino group of one amino acid and the carboxyl group of another, typical of protein molecules; also known as a [[胜键|勝鍵|sheng4 jian4]]

an ionic bond in chemistry

chroma key; bluescreen or greenscreen video editing technology

triple bond in chemistry; triple link

In ball games, a shot or play that determines the outcome of a game or match.

A chemical bond formed between metal atoms by the electrostatic attraction between positively charged ions and a shared pool of mobile electrons.

the backspace key on a computer keyboard

arrow key on a computer keyboard

refers to a system or service that can be started or operated by pressing a single button; one-click

The up arrow key on a computer keyboard

the down arrow key on a computer keyboard

(idiom) to take caution as the key; to proceed very carefully

valence bond (chemistry)

A crucial state in U.S. presidential elections where the outcome is uncertain and could determine the overall result.

The most important or decisive point in time; a moment of truth

key performance indicator; KPI

function key on a computer keyboard

right arrow key on a computer keyboard

Early keyboard instrument shaped like a grand piano that produces sound by plucking strings rather than striking them; largely replaced by the piano after the 18th century

left arrow key on a computer keyboard

a button on a telephone or device that is programmed to automatically dial a specific stored number

the metal ring or bolt mechanism used to lock a door; a door lock

The sound produced when pressing a key on a telephone or computer keyboard; electronic keypad; key tone

hotkey; keyboard shortcut

the button on a computer keyboard used to confirm a command or selection

chemical bond formed between the amino group of one amino acid and the carboxyl group of another, common in proteins

sleep mode button, specifically on an air conditioner remote control

(machinery) a series of parallel grooves on a shaft or the matching parts of a wheel; spline

supplementary keypad; a secondary set of keys on a computer keyboard used for numeric entry or special functions

(literary) crucial point; key; pivot