凸

See also: 凹
凸 U+51F8, 凸
CJK UNIFIED IDEOGRAPH-51F8
← 凷
[U+51F7] 		CJK Unified Ideographs 凹 →
[U+51F9]

Translingual
Stroke order
5 strokes
Stroke order (Japan)
5 strokes

Han character

凸 (Kangxi radical 17, 凵+3, 5 strokes, cangjie input 月尸尸 (BSS), four-corner 77777, composition ⿵⿰⿳丨一丨㇎一)

Derived characters

References
  • Kangxi Dictionary: page 135, character 9
  • Dai Kanwa Jiten: character 1809
  • Dae Jaweon: page 301, character 5
  • Hanyu Da Zidian (first edition): volume 1, page 307, character 6
  • Unihan data for U+51F8

Chinese
simp. and trad.
 凸

Glyph origin

Pictogram (象形) .

Etymology

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “Related to 突?”)

Pronunciation

Note:
  • tū - colloquial;
  • dŏk - literary.
Rime
Character 凸 凸
Reading # 1/2 2/2
Initial (聲) 定 (7) 定 (7)
Final (韻) 沒 (56) 屑 (87)
Tone (調) Checked (Ø) Checked (Ø)
Openness (開合) Closed Open
Division (等) I IV
Fanqie 陀骨切 徒結切
Baxter dwot det
Reconstructions
Zhengzhang
Shangfang		 /duət̚/ /det̚/
Pan
Wuyun		 /duot̚/ /det̚/
Shao
Rongfen		 /duət̚/ /dɛt̚/
Edwin
Pulleyblank		 /dwət̚/ /dɛt̚/
Li
Rong		 /duət̚/ /det̚/
Wang
Li		 /duət̚/ /diet̚/
Bernard
Karlgren		 /dʱuət̚/ /dʱiet̚/
Expected
Mandarin
Reflex		 dú dié
Expected
Cantonese
Reflex		 deot6 dit6
Zhengzhang system (2003)
Character 凸 凸
Reading # 1/2 2/2
No. 12482 12483
Phonetic
component		 凸 凸
Rime
group		 物 物
Rime
subdivision		 1 2
Corresponding
MC rime		 姪 突
Old
Chinese		 /*dɯːd/ /*duːd/
Notes 突晚起分化字

Definitions

凸

  1. convex
  2. to protrude; to stick out

Synonyms
  • (to protrude):

Antonyms
  • (antonym(s) of “convex”): 凹 (āo, “concave”)

Compounds

Japanese

Kanji
凸

(common “Jōyō” kanji)

Readings
  • Go-on: とち (tochi)
  • Kan-on: とつ (totsu, Jōyō)
  • Kun: でこ (deko, 凸); つばくむ (tsubakumu, 凸む)

Compounds

Pronunciation

Adjective

凸(とつ) • (totsu) -na (adnominal 凸(とつ)な (totsu na), adverbial 凸(とつ)に (totsu ni))

  1. convex
Inflection
Inflection of 凸
Stem forms
Imperfective (未然形) 凸だろ とつだろ totsu daro
Continuative (連用形) 凸で とつで totsu de
Terminal (終止形) 凸だ とつだ totsu da
Attributive (連体形) 凸な とつな totsu na
Hypothetical (仮定形) 凸なら とつなら totsu nara
Imperative (命令形) 凸であれ とつであれ totsu de are
Key constructions
Informal negative 凸ではない
凸じゃない		 とつではない
とつじゃない		 totsu de wa nai
totsu ja nai
Informal past 凸だった とつだった totsu datta
Informal negative past 凸ではなかった
凸じゃなかった		 とつではなかった
とつじゃなかった		 totsu de wa nakatta
totsu ja nakatta
Formal 凸です とつです totsu desu
Formal negative 凸ではありません
凸じゃありません		 とつではありません
とつじゃありません		 totsu de wa arimasen
totsu ja arimasen
Formal past 凸でした とつでした totsu deshita
Formal negative past 凸ではありませんでした
凸じゃありませんでした		 とつではありませんでした
とつじゃありませんでした		 totsu de wa arimasen deshita
totsu ja arimasen deshita
Conjunctive 凸で とつで totsu de
Conditional 凸なら（ば） とつなら（ば） totsu nara (ba)
Provisional 凸だったら とつだったら totsu dattara
Volitional 凸だろう とつだろう totsu darō
Adverbial 凸に とつに totsu ni
Degree 凸さ とつさ totsusa

Etymology 2
Kanji in this term
凸
でこ
Grade: S
kun’yomi
For pronunciation and definitions of 凸 – see the following entry.
【でこ】
[noun] 凸: forehead
(This term, 凸, is an alternative spelling of the above term.)

References
  1. Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tōkyō: Sanseidō, →ISBN

Korean

Hanja

凸 (eumhun 볼록하다 철 (bollokhada cheol))

  1. This term needs a translation to English. Please help out and add a translation, then remove the text {{rfdef}}.

Vietnamese

Han character

凸: Hán Nôm readings: đột

  1. This term needs a translation to English. Please help out and add a translation, then remove the text {{rfdef}}.
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