| a mark (?) used as a diacritic over a vowel, as ?, ?, ?, to indicate a vowel sound different from that of the letter without the diacritic |
| the borrowing of linguistic forms by one language or dialect from another when both occupy a single geographical or cultural community |
substance sub·stance (sŭb'stəns)
n.
That which has mass and occupies space; matter.
A material of a particular kind or constitution.