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orig·i·na·tor noun : one that originates

Synonyms

author, creator, father, founder—more at FATHER

designer, developer, innovator, inventor—more at INVENTOR

ori·ole noun : any of various New World birds of which the males are usu. black and yellow or black and orange

or·i·son noun : PRAYER

or·mo·lu noun : a golden or gilded brass used for decorative purposes

1ornament noun : something that lends grace or beauty

— or·na·men·ta·tion noun

Synonyms

adornment, caparison, decoration, embellishment, frill, garnish, trim—more at DECORATION

2ornament verb : to provide with ornament : ADORN

Synonyms

adorn, array, beautify, bedeck, deck, decorate, do, dress, embellish, enrich, garnish, grace, trim—more at DECORATE

or·na·men·tal adjective : DECORATIVE : of, relating to, or serving as ornament

or·nate adjective : elaborately decorated

— or·nate·ly adverb

— or·nate·ness noun

Synonyms

florid, overwrought; also arabesque, baroque, rococo; extravagant, flamboyant, spectacular; flashy, garish, gaudy, glitzy, loud, ostentatious, pretentious, showy, swank, tawdry; elaborate, extreme; adorned, arrayed, beautified, bedecked, decked, decorated, embellished, enriched, garnished, ornamented, trimmed; flowery, frilly, lacy; enhanced, heightened, intensified; bossed, chased, embossed, embroidered, flounced, garlanded, gilded, laced, wreathed

Antonyms

austere, plain, severe, stark, unadorned

or·nery adjective : having an irritable disposition

Synonyms

bearish, bilious, cantankerous, disagreeable, dyspeptic, ill-humored, ill-tempered, splenetic, surly

or·ni·thol·o·gy noun, plural -gies : a branch of zoology dealing with birds

— or·ni·tho·log·i·cal adjective

— or·ni·thol·o·gist noun

oro·tund adjective 1 : SONOROUS

2 : POMPOUS

— oro·tun·di·ty noun

or·phan noun : a child deprived by death of one or usu. both parents

— orphan verb

or·phan·age noun : an institution for the care of orphans

or·tho·don·tia noun : ORTHODONTICS

or·tho·don·tics noun : a branch of dentistry concerned with the correction of faults in the arrangement and placing of the teeth

— or·tho·don·tist noun

or·tho·dox adjective [ORIGIN: MF or LL; MF orthodoxe, fr. LL orthodoxus, fr. LGk orthodoxos, fr. Gk orthos right + doxa opinion]

1 : conforming to established doctrine esp. in religion

2 : according with, sanctioned by, or based on convention : CONVENTIONAL

3 cap : of or relating to a Christian church originating in the church of the Eastern Roman Empire

— or·tho·doxy noun

Synonyms

[1] conservative, old-fashioned, reactionary, traditional—more at CONSERVATIVE

[2] ceremonial, ceremonious, conventional, formal, regular, routine—more at FORMAL

or·thog·ra·phy noun : SPELLING

— or·tho·graph·ic adjective

or·tho·pe·dics noun singular or plural : a branch of medicine concerned with the correction or prevention of skeletal injuries or disorders

— or·tho·pe·dic adjective

— or·tho·pe·dist noun

-ory adjective suffix 1 : of, relating to, or characterized by

2 : serving for, producing, or maintaining

Os symbol osmium

OS abbreviation 1 [ORIGIN L oculus sinister] left eye

2 ordinary seaman

3 out of stock

Osage noun, plural Osag·es or Osage : a member of an American Indian people orig. of Missouri

os·cil·late verb -lat·ed; -lat·ing 1 : to swing backward and forward like a pendulum

2 : to move or travel back and forth between two points

3 : VARY, FLUCTUATE

— os·cil·la·tor noun

— os·cil·la·to·ry adjective

os·cil·la·tion noun : the action or state of oscillating

os·cil·lo·scope noun : an instrument in which variations in current or voltage appear as a visible wave form on a fluorescent screen

os·cu·late verb -lat·ed; -lat·ing : KISS

— os·cu·la·tion noun

— os·cu·la·to·ry adjective

Osee noun : HOSEA

OSHA abbreviation Occupational Safety and Health Administration

osier noun : any of various willows with pliable twigs used esp. in making baskets