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[2] all, entire, undivided, whole—more at WHOLE

con·cen·tra·tion noun 1 : the act or process of concentrating : the state of being concentrated; especially : direction of attention on a single object

2 : the amount of a component in a given area or volume

Synonyms

absorption, attention—more at ATTENTION

concentration camp noun : a camp where persons (as prisoners of war or political prisoners) are confined

con·cen·tric adjective 1 : having a common center <~ circles>

2 : COAXIAL

1concept noun : something conceived in the mind : THOUGHT, NOTION, IDEA

Synonyms

idea, image, impression, notion, picture, thought—more at IDEA

2concept adjective 1 : organized around a main idea or theme

2 : created to illustrate a concept

con·cep·tion noun 1 : the process of conceiving or being conceived

2 : the power to form or understand ideas or concepts

3 : a general idea : CONCEPT

4 : the originating of something

con·cep·tu·al adjective : of, relating to, or consisting of concepts

— con·cep·tu·al·ly adverb

con·cep·tu·al·ize verb -ized; -iz·ing : to form a conception of

1concern verb 1 : to relate to : be about

2 : to be the business of : INVOLVE

3 : ENGAGE, OCCUPY

4 : to be a care, trouble, or distress to

Synonyms

[1] cover, deal, pertain, treat; also appertain (to), bear (on or upon), refer (to), relate (to); allude (to), glance (upon), mention, touch (upon); offer, present; contain, embrace, encompass, entail, include, incorporate

[2] affect, interest, involve, touch; also apply (to), relate (to); embroil, ensnare, entangle, implicate

[4] agitate, bother, discompose, disquiet, distress, disturb, exercise, freak, perturb, undo, unhinge, unsettle, upset, worry

2concern noun 1 : an uneasy state of blended interest, uncertainty, and apprehension : ANXIETY

2 : AFFAIR, MATTER

3 : a business organization

Synonyms

[1] agitation, anxiety, apprehension, care, disquiet, nervousness, perturbation, uneasiness, worry—more at ANXIETY

[3] business, company, enterprise, establishment, firm, house, outfit—more at ENTERPRISE

con·cerned adjective 1 : ANXIOUS, UNEASY

2 : INVOLVED

con·cern·ing preposition : relating to : REGARDING

Synonyms

about, apropos of, of, on, regarding, respecting, toward—more at ABOUT

con·cern·ment noun 1 : something in which one is concerned

2 : IMPORTANCE, CONSEQUENCE

1concert noun 1 : agreement in a plan or design

2 : a concerted action

3 : a public performance (as of music)

2concert verb 1 : to plan together

2 : to settle or adjust by conferring and reaching an agreement

Synonyms

[1] collaborate, cooperate, join, team—more at COOPERATE

[2] arrange, conclude, negotiate—more at NEGOTIATE

con·cert·ed adjective 1 : mutually agreed on

2 : performed in unison

Synonyms

collective, common, communal, conjoint, joint, mutual, public, united—more at COLLECTIVE

con·cer·ti·na noun : an instrument of the accordion family

concertina wire noun : a coiled wire with sharp points for use as an obstacle

con·cert·mas·ter or con·cert·meis·ter noun : the leader of the first violins of an orchestra and assistant to the conductor

con·cer·to noun, plural -ti or -tos [ORIGIN: It]

: a piece for one or more solo instruments and orchestra in three movements

con·ces·sion noun 1 : an act of conceding or yielding

2 : something yielded

3 : a grant by a government of land or of a right to use it

4 : a grant of a portion of premises for some specific purpose; also : the activities or enterprise carried on

— con·ces·sion·ary adjective

Synonyms

[1] acknowledgment, admission, avowal, confession—more at CONFESSION

[1, 2] accommodation, compromise, give-and-take, negotiation; also arrangement, bargain, deal, understanding; agreement, settlement

con·ces·sion·aire noun : one that owns or operates a concession

conch noun, plural conchs or conch·es : a large spiral-shelled marine gastropod mollusk; also : its shell

con·cierge noun, plural con·cierges