1. Occurring or payable twice each year
   - semiannual, biannual, biyearly

1. Every half year, every six months

See also: periodic, periodical

• Methuselah
• methyl
• methyl alcohol
• methyl bromide
• methyl ethyl ketone
• methyl group
• methyl orange
• methyl phenol
• methyl radical
• methyl salicylate
• methylate
• methylated
• methylated spirit
• methylated spirits
• methylbenzene
• methyldopa
• methylene
• methylene blue
• methylene chloride
• methylene group
• methylene radical
• methylenedioxymethamphetamine
• methylphenidate
• methyltestosterone
• methylthionine chloride