Glossary Term Definition
Numerals that share the same height (usually cap height) and sit on the baseline, designed for use in tables and all-caps settings; also called titling figures.
Definition
Numerals that share the same height — usually cap height — and sit on the baseline. Lining figures are designed for use in tables, all-caps settings, and display work. They are also called titling figures or ranging figures. Compare with old-style (text) figures, which have varying heights and extenders.
Source
No access — Robert Bringhurst — p. 326:
Numerals that share the same height and sit on the baseline.