See also: ° [U+00B0 DEGREE SIGN], ⁰ [U+2070 SUPERSCRIPT ZERO], ᵒ [U+1D52 MODIFIER LETTER SMALL O], ◌̊, ◦ [U+25E6 WHITE BULLET], and Appendix:Variations of "o"
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Translingual
editDescription
editA small letter o, to be placed at the top of the line, often underlined.
Symbol
editº
- Used as the masculine ordinal indicator in several Romance languages.
- Used as a general ordinal indicator in other languages.
- 1966, George J. Minty, “On the Axiomatic Foundations of the Theories of Directed Linear Graphs, Electrical Networks and Network-Programming”, in Journal of Mathematics and Mechanics, volume 15, number 3 (in English), →JSTOR, pages 506–507:
- A digraphoid is a structure consisting of: (1º) a graphoid, and (2º) a partitioning of each circuit and cocircuit of the graphoid, each being partitioned into two sets; this partitioning is to satisfy the axiom: […]