รัศมี
rát-sà-mǐiMeanings
1NounB2
radius; radial distance
the distance from the center of a circle or sphere to its boundary; also a radius as a line from center to edge
Examples
ในnaiในnai1in; inside; within2during; in (time)3of; belonging to (formal)คณิตศาสตร์ká-nít-dtà-sàatคณิตศาสตร์ká-nít-dtà-sàatmathematics; mathเราraoเราrao1we; us2I; me (informal/regional)วัดwátวัดwát1to measure2Buddhist temple3to gauge; assessรัศมีrát-sà-mǐiรัศมีrát-sà-mǐi1radius; radial distance2ray; beam; radiance3aura; radiance; halo (literal/figurative)ของkɔ̌ɔngของkɔ̌ɔng1of; belonging to2thing; item; stuff3property; goodsวงกลมwong-glomวงกลมwong-glom1circle (round shape)2circular; in the shape of a circle3[to] circle [sth]จากjàakจากjàak1from; away from2[to] leave; depart; part from3nipa palmจุดศูนย์กลางjùt-sǔun-glaangจุดศูนย์กลางjùt-sǔun-glaangcenter; central point; hubไปถึงbpai-tʉ̌ngไปถึงbpai-tʉ̌ng1[to] arrive at; get to; reach (a place)2[to] reach; extend to (level/amount/scope)3[to] reach; be delivered to (sb/sth)ขอบkɔ̀ɔpขอบkɔ̀ɔp1edge; rim; border2margin (of a page or surface)3brim (hat or container)4lip (of a container or opening)5borderline; periphery (figurative)วงwongวงwong1circle; ring2band; musical group3group; circle (of people)4classifier: sets (musical groups, rings)
In mathematics, we measure the radius of a circle from the center to the edge.
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ถ้าtâaรัศมีrát-sà-mǐiเท่ากับtâo-gàp5เซนติเมตรseen-dtì-méetเส้นผ่านศูนย์กลางsên-pàan-sǔun-glaangจะjàยาวyaao10เซนติเมตรseen-dtì-méet
If the radius is 5 centimeters, the diameter will be 10 centimeters.
นักเรียนnák-riianวาดwâatเส้นsênรัศมีrát-sà-mǐiจากjàakจุดศูนย์กลางjùt-sǔun-glaangไปยังbpai-yangจุดjùtบนbonเส้นรอบวงsên-rɔ̂ɔp-wongเพื่อpʉ̂ʉaหาhǎaความยาวkwaam-yaaoที่ต้องการtîi-dtɔ̂ng-gaan
The student drew a radius from the center to a point on the circumference to find the required length.
ในnaiการคำนวณgaan kam-nuuanพื้นที่púen têeวงกลมwong-glomเราraoต้องdtôngทราบsâapรัศมีrát-sà-mĕeอย่างถูกต้องyàang tòk dtôngเพราะpráwพื้นที่púen têeแปรผันbprae pănตามdtaamรัศมียกrát-sà-mĕe yókกำลังสองgam-lang sŏng
To calculate the area of a circle, we must know the radius accurately because the area varies with the radius squared.
2NounB2
ray; beam; radiance
a ray or beam of light; also the radiant light spreading out from a source
Examples
เมื่อmʉ̂ʉaเมื่อmʉ̂ʉa1when; at the time that2at; in; on (with time expressions)เมฆmêekเมฆmêekcloudแหวกwɛ̀ɛkแหวกwɛ̀ɛk1[to] part; push aside; open a gap2[to] cut/force one’s way throughออกɔ̀ɔkออกɔ̀ɔk1[to] go out; exit; leave2out; outward3[in sports] out of bounds4[to] come out; appear; be issued5[to] produce; emit; put out6[to] pay; spend; disburse7[to] quit; resign8[to] issue; publish9successfully; out (indicating comprehension or discovery)เราraoเราrao1we; us2I; me (informal/regional)เห็นhěnเห็นhěn1[to] see2[to] notice; [to] realize; [to] find (that)3[to] think; [to] be of the opinion4[to] consider; [to] regard asรัศมีrát-sà-mǐiรัศมีrát-sà-mǐi1radius; radial distance2ray; beam; radiance3aura; radiance; halo (literal/figurative)ของkɔ̌ɔngของkɔ̌ɔng1of; belonging to2thing; item; stuff3property; goodsดวงอาทิตย์duuang-aa-títดวงอาทิตย์duuang-aa-títthe Sunส่องsɔ̀ɔngส่องsɔ̀ɔng1[to] shine (a light); illuminate2[to] examine closely; inspect3[to] snoop; check out (informal)4[to] shoot (informal)ลงมาlong-maaลงมาlong-maa1[to] come down; descend2down toward the speaker (directional complement)3[to] decrease; come down (to a level)4up to; [number] and underที่tîiที่tîi1place; spot; seat; space2at; in; to (a place)3classifier: places; seats; individual servings4that/which/who (relative marker)5when; the time that (time marker)6ordinal markerทุ่งนาtûng-naaทุ่งนาtûng-naarice field; paddy field
When the clouds parted, we saw the sun’s rays shining down onto the field.
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ไฟฉายfai-chǎaiส่องรัศมีsɔ̀ɔng-rát-sà-mǐiเป็นbpenเส้นตรงsên-dtrongไปยังbpai-yangป้ายbpâaiทางออกtaang-ɔ̀ɔkในnaiอุโมงค์ù-moong
The flashlight cast a beam straight toward the exit sign in the tunnel.
ในnaiยามค่ำyaam-kâmรัศมีrát-sà-mǐiจากjàakประภาคารbprà-paa-kaanแผ่กระจายpɛ̀ɛ-grà-jaaiเป็นbpenพัดpátกวาดgwàatไปbpaiบนผิวน้ำbon-pǐu-náam
At night, the lighthouse’s rays fan out across the surface of the water.
เม็ดฝนmét-fǒnลอยlɔɔiค้างkáangกลางอากาศglaang-aa-gàatทำให้tam-hâiรัศมีrát-sà-mǐiของkɔ̌ɔngแสงsɛ̌ɛngหน้ารถnâa-rótแตกกระจายdtɛ̀ɛk-grà-jaaiเป็นbpenเส้นsênละเอียดlá-ìiat
Raindrops suspended in the air caused the car headlights’ beams to scatter into fine streaks.
3NounC1
aura; radiance; halo (literal/figurative)
a glow or halo of light around a person or object; figuratively, a sense of charisma or special presence
Examples
นักร้องnák-rɔ́ɔngนักร้องnák-rɔ́ɔngsinger; vocalistยืนyʉʉnยืนyʉʉn1[to] stand2standing; upright (posture/position)3fixed; steady; unchanged (figurative)4to be fixed; remain unchanged (figurative)บนbonบนbon1on; upon; in; above2upper; top3[to] vow (at a shrine)เวทีwee-tiiเวทีwee-tii1stage; platform2forum; arena3ring (combat sports)พร้อมprɔ́ɔmพร้อมprɔ́ɔm1ready; prepared2along with; together with3equipped; provided with4together; simultaneouslyรัศมีrát-sà-mǐiรัศมีrát-sà-mǐi1radius; radial distance2ray; beam; radiance3aura; radiance; halo (literal/figurative)ของkɔ̌ɔngของkɔ̌ɔng1of; belonging to2thing; item; stuff3property; goodsไฟfaiไฟfai1fire; flame2electricity; power3light (from a lamp)4signal light; indicator5anger; passion (figurative)ที่tîiที่tîi1place; spot; seat; space2at; in; to (a place)3classifier: places; seats; individual servings4that/which/who (relative marker)5when; the time that (time marker)6ordinal markerทำให้tam-hâiทำให้tam-hâi1[to] make; cause [sb/sth] to [do/be sth]; render2[to] do/make [sth] for [sb]เธอtəəเธอtəə1you (informal; familiar)2she; herดูduuดูduu1[to] look; watch; see2[to] examine; check; inspect3[to] seem; appear4try; have a go5[to] divine; tell fortuneโดดเด่นdòot-dèenโดดเด่นdòot-dèen1outstanding; prominent2striking; eye-catching3[to] stand out; be prominentกว่าgwàaกว่าgwàa1than (comparative marker)2more than; overใครkraiใครkrai1who2anyone; whoever
The singer stood on stage with a halo of lights that made her stand out from everyone.
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แม้mɛ́ɛห้องhɔ̂ngจะjàมืดmʉ̂ʉtแต่dtɛ̀ɛรัศมีrát-sà-mǐiจากjàakเทียนtiianรอบrɔ̂ɔpรูปปั้นrûup-bpânทำให้tam-hâiบรรยากาศban-yaa-gàatดูduuขลังklǎngและlɛ́น่าศรัทธาnâa-sàt-taa
Even though the room was dark, the glow from the candles around the statue made the atmosphere sacred and awe-inspiring.
เขาkǎoเดินเข้ามาdəən-kâo-maaพร้อมprɔ́ɔmรัศมีrát-sà-mǐiของkɔ̌ɔngผู้นำpûu-namที่tîiทำให้tam-hâiผู้คนpûu-konเงียบngîiapและlɛ́ตั้งใจdtâng-jaiฟังfangโดยdooiไม่ต้องmâi-dtɔ̂ngมีใครmii-kraiสั่งsàng
He walked in with a leader’s aura that made people fall silent and listen without being told.
แม้mɛ́ɛคำพูดkam-pûutจะjàเรียบง่ายrîiap-ngâaiแต่dtɛ̀ɛรัศมีrát-sà-mǐiบางอย่างbaang-yàangในnaiแววตาwɛɛo-dtaaและlɛ́ท่าทีtâa-tiiของkɔ̌ɔngเธอtəəกลับglàpดึงดูดใจdʉng-dùut-jaiคนkonทั้งtángห้องhɔ̂ngอย่างประหลาดyàang-bprà-làat
Though her words were simple, a certain radiance in her eyes and demeanor strangely captivated the entire room.
Tones
See how the spelling sets each syllable's tone, step by step.
Why is รัศมี said รัด-สะ-หมี?
rát-sà-mǐi
The tone rules below use the spoken syllables.
3 syllables · pick one to see its rule
How the tone is decided
- Consonant classLow class
- Tone markNo tone mark
- Syllable endingDead syllableShort vowelEnds in -ด, a stop, so it is dead.
Low class consonants
คฅฆงชซฌญฑฒณทธนพฟภมยรลวฬฮ
Result
High tone
rát
Starts high and keeps climbing.
Low class + No tone mark + Dead syllable · Short vowel → High
Tone chart
Every class and spelling pattern, with this syllable outlined.
| Mid class | High class | Low class | |
|---|---|---|---|
| No mark + live | Mid | Rising | Mid |
| No mark + dead short | Low | Low | High |
| No mark + dead long | Low | Low | Falling |
| Mai ek | Low | Low | Falling |
| Mai tho | Falling | Falling | High |
| Mai tri | High | — | — |
| Mai chattawa | Rising | — | — |