開

简 开 · 繁 開
Cantonese · source Jyutpinghoi1#

Meanings · hoi1

  1. (verb) (of meeting, exhibition or events) to hold
Cantonese · source Jyutpinghoi1#

Meanings · hoi1

  1. to open
  2. to start
  3. to turn on
  4. to boil
  5. to write out (a prescription, check, invoice etc)
  6. to operate (a vehicle)
  7. carat (gold)
  8. abbr. for Kelvin, 开尔文
  9. abbr. for 开本, book format
  10. to set up
  11. to run
  12. to leave
  13. to hold (meeting
  14. exhibition)
  15. away
  16. apart
  17. aside
  18. verb particle marking habitual aspect
About these definitions

Source definition segments, in their original order. Characters a definition cites are shown without their Mandarin pinyin; classifier lists that CC-Canto copied from CC-CEDICT are marked Mandarin. The community dictionary is not independently verified by zimai.

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Reading & tones

Schematic citation-tone diagrams from the source numbers. These are not recordings or predictions of connected speech.

Same syllable, six tones

Characters whose customary Unihan reading (kCantonese) is this syllable in each tone, chosen as in the tone atlas (2013 standard level, then the number of CC-CEDICT words they form), with CC-Canto 2017's meaning for that reading; a dash means no catalogue character has that reading. Checked syllables (-p, -t, -k) normally carry tones 1, 3 and 6. Character readings, not word readings; no frequency implied.

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Written characters

Both source spellings are represented. Written membership is not an etymological or semantic claim.

Cantonese characters and the Mandarin bridge ↗

Mandarin comparison · separate source entries

CC-CEDICT, the Mandarin–English dictionary, lists the same written form:

  • 開 kāi CC-CEDICT · Mandarinto open (transitive or intransitive); (of ships, vehicles, troops etc) to start; to turn on; to put in operation; to operate; to run; to boil; to write out (a prescription, check, invoice etc); (directional complement) away; off; carat (gold); abbr. for Kelvin, 開爾文 Kāi ěr wén; …

A separate source entry, shown for comparison. The same characters can carry different senses in Mandarin and in Cantonese; zimai does not align these senses.

CC-Canto includes this pinyin reference: kai1. It does not establish a Mandarin word with the same meaning.

Look up this spelling in the Mandarin dictionary ↗
Compare dictionary sources Wiktionary · 31 senses · 1 Cantonese reading

Rime Cantonese 粵拼

hoi1

Cantonese word readings for 開. This lexicon supplies readings, not definitions.

CanCLID contributors · CC BY 4.0 · source & license · Data pack

Wiktionary English definitions · Chinese section

Independent source senses for this spelling, with usage labels retained. Not matched to the pronunciation above.

character · Etymology 1

  1. to open; to unlatch; to unfasten
  2. to start; to turn on; to switch on
  3. to make an opening; to open up
  4. (of a flower) to open out; to bloom
  5. (of a frozen river) to thaw
  6. to split; to divide; to cut
  7. to begin; to start
  8. to start; to set up; to open
  9. to remove (a ban or restriction)
  10. to boil (bubble and turn to vapour)
  11. to write out (a prescription, check, invoice, etc.)
  12. to book (a hotel room)
  13. to operate/run a business
  14. to hold (a meeting, exhibition, etc.)
  15. to pay
  16. to operate; to drive (a vehicle)
  17. (Cantonese) to make a liquid mixture
  18. apart; away
  19. (informal) short for 開除/开除 (kāichú, “to fire; to sack; to discharge; to dismiss”)
  20. (informal) to eat up
  21. (Cantonese, archaic) Progressive aspect particle, used to express that an event is/was in progress.
  22. (Cantonese) Inceptive and continuous aspect particle, used to express that an event has started and continues on for a while.
  23. (Cantonese) Habitual aspect particle.
  24. (Cantonese) Converbal aspect particle used to express a condition or rationale.
  25. (Chinese phonetics) short for 開口/开口 (kāikǒu, “open-mouthed”)
  26. (Hokkien) to spend (money)
  27. (Hokkien) to visit prostitutes
  28. a surname

character · Etymology 2

  1. karat (measure of gold purity)

character · Etymology 3

  1. (physics) short for 開爾文/开尔文 (kāi'ěrwén, “kelvin”)

character · Etymology 4

  1. (dialectal Cantonese, dialectal Hakka) Perfective aspect particle.

Source page · dump 2026-09-02 · Contributors & history

Wiktionary contributors · CC BY-SA 4.0 · source & license · Data pack

CC-Canto · Pleco Inc. · edition 2017-02-02
Source lines 18,943, 33,496 · Original publisher · CC BY-SA 3.0 · Edition & transformations

Original source comment: adapted from cc-cedict

Mandarin comparison: CC-CEDICT 2026-10-13, CC BY-SA 4.0. Source reading differences and six-tone sets: computed by zimai from Unihan 17.0.0 (Unicode License V3).

Exact source records & identity開 开 [kai1] {hoi1} /(verb) (of meeting, exhibition or events) to hold/

SHA-256: 55131e5ea63f00cbff7d190cbb05119904ed1cfcfe7ea6ec8a0459795e9baba3

開 开 [kai1] {hoi1} /to open/to start/to turn on/to boil/to write out (a prescription, check, invoice etc)/to operate (a vehicle)/carat (gold)/abbr. for Kelvin, 开尔文Kāi'ěrwén [开尔文]/abbr. for 开本kāiběn [开本], book format/to set up/to run/to leave/to hold (meeting / exhibition)/away/apart/aside/verb particle marking habitual aspect/ # adapted from cc-cedict

SHA-256: af4604bb4274aa24c5d8cad1af77aafdee48ccba5bed42ae67ae4114888a1407