Ha Definition
Ha
symbol
- 1. chem.
- Hahnium.
ha1
hah
exclamation
- 1. Expressing surprise, happiness, triumph, etc. See also ha-ha1.
ha2
abbreviation
- 1. Hectare or hectares.
hectare
noun
- 1. In the metric system: a metric unit of land measurement, equivalent to 100 ares (see are2), or 10 000 square metres (2.471 acres).
