biyearly

bi·year·ly  (b-yîrl)

adj.

1. Happening every two years. See Usage Note at bi-¹.

2. Happening twice a year; semiyearly.

adv.

1. Every two years.

2. Twice a year; semiyearly.

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biyearly [baɪˈjɪəlɪ]

adj & adv

1. every two years; biennial or biennially

2. (often avoided because of confusion with sense 1) twice a year; biannual or biannually See bi-¹

Thesaurus

Adj.	1.	biyearly - occurring every second year; "they met at biennial conventions" biennial periodic, periodical - happening or recurring at regular intervals; "the periodic appearance of the seventeen-year locust"
	2.	biyearly - occurring or payable twice each year biannual, half-yearly, semiannual periodic, periodical - happening or recurring at regular intervals; "the periodic appearance of the seventeen-year locust"
Adv.	1.	biyearly - every two years; "this festival takes places biennially" biennially
	2.	biyearly - twice a year semiannually