bicentennial

• POS: Adjective, Noun
• HYPHEN: bi=cen=ten=ni=al

CIDE DICTIONARY

bicentennial, a. [Pref. bi- + centennial.].

•  Consisting of two hundred years.  [1913 Webster]
•  Occurring every two hundred years.  [1913 Webster]

bicentennial, n. 

 The two hundredth year or anniversary, or its celebration.  [1913 Webster]

OXFORD DICTIONARY

bicentennial, n. & adj. esp. US
--n. a bicentenary.
--adj.
1 lasting two hundred years or occurring every two hundred years.
2 of or concerning a bicentenary.

THESAURUS

bicentennial

C, anniversary, annual holiday, bicentenary, biennial, birthday, bissextile day, cental, centare, centenarian, centenary, centennial, centennium, centigram, centimeter, centipede, centistere, centred, centref, centrev, centumvir, centumvirate, centurion, century, commemoration, cwt, decennial, diamond jubilee, golden wedding anniversary, gross, hecatomb, holy days, hundred, hundredweight, immovable feast, jubilee, leap year, long hundred, name day, natal day, octennial, one C, quadrennial, quasquicentennial, quincentenary, quincentennial, quinquennial, septennial, sesquicentenary, sesquicentennial, sextennial, silver wedding anniversary, tercentenary, tercentennial, tricennial, triennial, wedding anniversary

ROGET THESAURUS

bicentennial

Periodicity

N regularity of recurrence, periodicity, intermittence, beat, oscillation, pulse, pulsation, rhythm, alternation, alternateness, alternativeness, alternity, bout, round, revolution, rotation, turn, say, anniversary, jubilee, centenary, catamenia, courses, menses, menstrual flux, rota, cycle, period, stated time, routine, days of the week, Sunday, Monday, months of the year, January, feast, fast, Christmas, Easter, New Year's day, Allhallows, Allhallowmas, All Saints' Day, All Souls', All Souls' Day, Ash Wednesday, bicentennial, birthday, bissextile, Candlemas, Dewali, groundhog day, Halloween, Hallowmas, Lady day, leap year, Midsummer day, Muharram, woodchuck day, St. Swithin's day, natal day, yearbook, yuletide, punctuality, regularity, steadiness, periodic, periodical, serial, recurrent, cyclical, rhythmical, recurring, intermittent, remittent, alternate, every other, hourly, diurnal, daily, quotidian, tertian, weekly, hebdomadal, hebdomadary, biweekly, fortnightly, bimonthly, catamenial, monthly, menstrual, yearly, annual, biennial, triennial, centennial, secular, paschal, lenten, regular, steady, punctual, regular as clockwork, periodically, at regular intervals, at stated times, at fixed established, at established periods, punctually, de die in diem, from day to day, day by day, by turns, in turn, in rotation, alternately, every other day, off and on, ride and tie, round and round.