An algebra over a field; a ring with identity together with an injective ring homomorphism from a field, k, to the ring such that the image of the field is a subset of the center of the ring and such that the image of the field’s unity is the ring’s unity.

K-beautynoun

Cosmetic products and practices originating in South Korea.

K-complexnoun

A waveform that occurs approximately every 60–100 seconds during stage 2 of NREM sleep, and which consists of a brief negative high-voltage peak (usually >100µV), followed by a slower positive complex ~350–550ms, and at 900ms a final negative peak.

K-culturenoun

Abbreviation of Korean culture

k-d treenoun

A space-partitioning data structure for organizing points in a k-dimensional space, used in search algorithms etc.

K-dramanoun

Dramatic television series produced in South Korea.

k-essencenoun

kinetic quintessence

K-foodnoun

Abbreviation of Korean food

K-Hellname

Kuala Lumpur, capital city of Malaysia.

K-holenoun

The state of dissociation from (and lack of control over) the body commonly experienced after taking relatively high doses of the drug ketamine.

K-horrornoun

Korean horror fiction

k-linenoun

The line in an IRCd configuration file that records the hostname of a banned user

K-Magnoun

Synonym of langbeinite (“a potassium magnesium sulfate mineral”)

K-Midname

Catherine, Princess of Wales.

K-pointnoun

Synonym of construction point.

K-popnoun

South Korean pop music influenced by Western styles.

K-poppernoun

A person who performs, dances to, or enjoys K-pop music.

K-Quarantinenoun

A term to describe the strategy used by Republic of Korea during the COVID-19 pandemic to limit the spread of the virus, including a quarantine system, outreach campaigns, testing, and contact tracing.

k-radadj

Very good; excellent.

Spelling & Dictionary Insight

The English alphabetical index for the letter K contains 9,255 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 186 pages, and you are currently viewing page 1. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.

On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.

For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "K" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.