In normal handwriting, even long words are often written "joined up", without the pen leaving the paper, and the form of each written letter will often vary depending on which letters precede and follow it, but that does not make the whole word into a single glyph.
Two or more glyphs which have the same significance, whether used interchangeably or chosen depending on context, are called allographs of each other.
Richard has never achieved the same impact in the United States despite eight US Top 40 singles, including the million-selling "Devil Woman" and "We Don't Talk Anymore".
In Canada, Richard achieved comparatively more success, with a successful period in the early 1960s, and again in the late 1970s and early 1980s with some singles and albums reaching gold and platinum status.
For example, in most languages written in any variety of the Latin alphabet the dot on a lower-case i is not a glyph because it does not convey any distinction, and an i in which the dot has been accidentally omitted is still likely to be recognized correctly.
In Turkish, however, it is a glyph, because that language has two distinct versions of the letter i, with and without a dot.
is an elemental symbol within an agreed set of symbols, intended to represent a readable character for the purposes of writing.
However, in some cases, additional marks fulfill the role of diacritics, to differentiate distinct characters. In general, a diacritic is a glyph, even if (like a cedilla in French, the ogonek in several languages or the stroke on a Polish "Ł") it is contiguous with the rest of the character.
In summary, in typography and computing, a glyph is a graphical unit.
In graphonomics, the term glyph is used for a noncharacter, i.e. Most typographic glyphs originate from the characters of a typeface.
In archaeology, a glyph is a carved or inscribed symbol.
It may be a pictogram or ideogram, or part of a writing system such as a syllable, or a logogram.