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2 : a group or sequence of 100 like things

3 : a period of 100 years

century plant noun : a Mexican agave maturing and flowering only once in many years and then dying

CEO noun : the executive with the chief decision-making authority in an organization or business

ce·phal·ic adjective 1 : of or relating to the head

2 : directed toward or situated on or in or near the head

ce·ram·ic noun 1 plural : the art or process of making articles from a nonmetallic mineral (as clay) by firing

2 : a product produced by ceramics

— ceramic adjective

ce·ra·mist or ce·ram·i·cist noun : one who engages in ceramics

1cereal adjective [ORIGIN: L cerealis, fr. Ceres, the Roman goddess of agriculture]

: relating to grain or to the plants that produce it; also : made of grain

2cereal noun 1 : a grass (as wheat) yielding grain suitable for food; also : its grain

2 : a food and esp. a breakfast food prepared from the grain of a cereal

cer·e·bel·lum noun, plural -bellums or -bel·la [ORIGIN: ML, fr. L, dim. of cerebrum brain]

: a part of the brain that projects over the medulla and is concerned esp. with coordination of muscular action and with bodily balance

— cer·e·bel·lar adjective

ce·re·bral adjective 1 : of or relating to the brain, intellect, or cerebrum

2 : appealing to or involving the intellect

— ce·re·bral·ly adverb

Synonyms

[1, 2] inner, intellectual, mental, psychological—more at MENTAL

cerebral cortex noun : the surface layer of gray matter of the cerebrum that functions chiefly in coordination of sensory and motor information

cerebral palsy noun : a disorder caused by brain damage usu. before, during, or shortly after birth and marked esp. by defective muscle control

cer·e·brate verb -brat·ed; -brat·ing : THINK

— cer·e·bra·tion noun

ce·re·brum noun, plural -brums or -bra [ORIGIN: L, brain]

: the enlarged front and upper part of the brain that contains the higher nervous centers

cere·ment noun : a shroud for the dead

1ceremonial adjective 1 : of, relating to, or forming a ceremony

2 : stressing careful attention to form and detail

— cer·e·mo·ni·al·ly adverb

Synonyms

ceremonious, conventional, formal, orthodox, regular, routine—more at FORMAL

2ceremonial noun : a ceremonial act or system : RITUAL, FORM

cer·e·mo·ni·ous adjective 1 : devoted to forms and ceremony

2 : of, relating to, or constituting a ceremony : CEREMONIAL

3 : according to formal usage or procedure

4 : marked by ceremony

— cer·e·mo·ni·ous·ly adverb

— cer·e·mo·ni·ous·ness noun

Synonyms

[3, 4] correct, decorous, formal, proper, starchy; also sober, solemn, stately; chivalrous, courtly, gallant; genteel, polished, refined; civil, courteous, polite, red-carpet

Antonyms

casual, easygoing, informal, laid-back

cer·e·mo·ny noun, plural -nies 1 : a formal act or series of acts prescribed by law, ritual, or convention

2 : a conventional act of politeness

3 : a mere outward form with no deeper significance

4 : FORMALITY

Synonyms

ceremonial, form, formality, observance, rite, ritual, solemnity—more at RITE

ce·re·us noun : any of various cacti of the western U.S. and tropical America

ce·rise noun [ORIGIN: F, lit., cherry]

: a moderate red color

ce·ri·um noun : a malleable metallic chemical element used esp. in alloys

cer·met noun : a strong alloy of a heat-resistant compound and a metal used esp. for turbine blades

cert abbreviation certificate; certification; certified; certify

1certain adjective 1 : not subject to change or fluctuation : FIXED, SETTLED

2 : of a specific but unspecified character <~ people in authority>

3 a : capable of being depended on : DEPENDABLE, RELIABLE

b : incapable of failing

4 : INDISPUTABLE, UNDENIABLE

5 : assured in mind or action

6 : INEVITABLE

Synonyms

[1] determinate, final, firm, fixed, flat, frozen, hard, hard-and-fast, set, settled, stable—more at FIXED

[2] anonymous, one, some, unidentified, unnamed, unspecified; also particular,