# `GDEF`: Glyph Definition table

The `GDEF` table is an OpenType table.

class fontTools.ttLib.tables.G_D_E_F_.table_G_D_E_F_(tag=None)

  Bases: `BaseTTXConverter`

  Glyph Definition table

  The `GDEF` table stores various glyph properties that are used by OpenType Layout.

  See also https://learn.microsoft.com/en-us/typography/opentype/spec/gdef

  mergeMap = {'table': <function mergeObjects>, 'tableTag': <function onlyExisting.<locals>.wrapper>}
  prune_post_subset(font, options)
  subset_glyphs(s)