จักษุ

jàk-sù

Meanings

1NounC1

eye (formal)

The eye; the organ of sight (a formal, literary, or medical term for ตาตาdtaa1eye2grandfather (maternal)3elderly man; grandpa (informal)4grid square; mesh5turn (in a game)6eye (classifier for small holes/mesh openings)).

Examples

3 more examples
2NounC1

ophthalmology; ophthalmology department

The branch of medicine concerned with the eye; ophthalmology. Also used to refer to the ophthalmology department (esp. on hospital signs), often as a clipped form of จักษุวิทยาจักษุวิทยาjàk-sù-wít-tá-yaaophthalmology/จักษุศาสตร์.

Examples

3 more examples

Tones

See how the spelling sets each syllable's tone, step by step.

Why is จักษุ said จัก-สุ?

jàk-sù

The tone rules below use the spoken syllables.

2 syllables · pick one to see its rule

How the tone is decided

  1. Consonant classMid class
  2. Tone markNo tone mark
  3. Syllable endingDead syllableEnds in -ก, a stop, so it is dead.

Mid class consonants

กจฎฏดตบปอ

Result

Low tone

jàk

Starts low and stays low, easing slightly down.

Mid class + No tone mark + Dead syllable → Low

Tone chart

Every class and spelling pattern, with this syllable outlined.

Mid classHigh classLow class
No mark + liveMidRisingMid
No mark + dead shortLowLowHigh
No mark + dead longLowLowFalling
Mai ekLowLowFalling
Mai thoFallingFallingHigh
Mai triHigh——
Mai chattawaRising——