○

See also: ◌⃝, ⚬ [U+26AC MEDIUM SMALL WHITE CIRCLE], ∘ [U+2218 RING OPERATOR], ❍ [U+274D SHADOWED WHITE CIRCLE], 〇 [U+3007 IDEOGRAPHIC NUMBER ZERO], and Appendix:Variations of "o"

○ U+25CB, ○ WHITE CIRCLE ← ◊ [U+25CA] Geometric Shapes ◌ → [U+25CC]

Character variations

￮ U+FFEE, ￮ HALFWIDTH WHITE CIRCLE [unassigned: U+FFEF–U+FFF8] ← ￭ [U+FFED] Halfwidth and Fullwidth Forms → [U+FFF9]

◯ U+25EF, ◯ LARGE CIRCLE ← ◮ [U+25EE] Geometric Shapes ◰ → [U+25F0]

Text style	Emoji style
⭕︎	⭕️
Text style is forced with ⟨︎⟩ and emoji style with ⟨️⟩.
⭕ U+2B55, ⭕ HEAVY LARGE CIRCLE ← ⭔ [U+2B54] Miscellaneous Symbols and Arrows ⭖ → [U+2B56]

Translingual

Design

A generic circle shape.

Symbol

○

1. (geometry) a circle
2. A female family member in a family tree.

   Coordinate term: □

3. (phonetics) An unidentifiable or indeterminate segment.
4. (chemistry, obsolete) Oxygen (Daltonian symbol).
5. (go) A white stone.

   Antonym: ●

Japanese

Etymology

Directly from 丸(まる) (maru, “circle”).

Noun

○(まる) • (maru) 

1. circle
2. correct, check mark, good

Antonyms

• ×(ばつ) (batsu): incorrect, bad

Coordinate terms

• ◎(にじゅうまる) (nijūmaru): very good
• △(さんかく) (sankaku): slightly wrong; OK but not great

Derived terms

• ○×

Symbol

○(まる) or ○(なに) • (maru or nani) 

1. Placeholder for a kanji or kana.
   1. Used to indicate a space to be filled in.

      ○○が好き

      ______ ga suki

      to like ______

   2. Used to censor or obscure individual characters.

      セッ○ス

      sekkusu

      s*x (sex)

      創○○会

      Sōka Gakkai

      S*k* Gak*i (Soka Gakkai)

      Micr○soft

      Micr*soft

      ち○ぽ

      chi*po

      d**k

      • 2004, 榎本年弥, 旅の指さし会話帳7 オーストラリア: オーストラリア英語‎^[1], Joho Center Publishing, →ISBN, page 122:

        prick………チ○ポコ
        prickhead………バカ野郎

        dickheadと同じく、「チン○コ頭」の意味。

See also

• ○(まる)○(まる) (marumaru)
• 〇 (“zero”, an alternative for 零)
• ほにゃらら (a possible pronunciation for a blanked-out word, such as in ○○が好き above)