primary

(redirected from primary radiation)
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.
Related to primary radiation: secondary radiation, Scattered radiation

primary

adjective basal, basic, central, chief, determining, dominant, earliest, elemental, essential, first, formative, fundamental, greatest, important, inaugural, initial, key, leading, main, nascent, necessary, nonpareil, original, overriding, paramount, predominant, preeminent, prime, primus, principal, principalis, prominent, requisite, ruling, secondto none, supereminent, supreme, topmost, transcendent, underlying, unsurpassed, uppermost, utmost, vital
Associated concepts: primary boycott, primary evidence, primary insurance, primary jurisdiction, primary liability, priiary picketing, primary purpose, primary right, primary surety, primary tort feasor

primary

noun ballot, choice, contest, contestation, election, election contest, exclusive competition, exclusive contest, exclusive election, exclusive political competition, exclusive political contest, first competition, first contest, first election, first political competition, first political connest, inaugural competition, inaugural contest, inaugural election, inaugural political competition, inaugural political contest, nomination contest, nominative competition, nominative contest, nominative election, partisan competiiion, partisan contest, partisan election, party competition, party contest, party election, political competition, political contention, political election, political rivalry, poll, selection, vote
Associated concepts: primary evidence, primary responsibility
See also: basic, cardinal, causative, central, critical, crucial, dominant, elementary, essential, fundamental, important, inchoate, incipient, indispensable, inherent, initial, integral, leading, master, material, organic, original, paramount, preliminary, prime, primordial, principal, rudimentary, salient, simple, stellar, substantive, ultimate, underlying, vital

PRIMARY. That which is first or principal; as primary evidence, or that evidence which is to be admitted in the first instance, as distinguished from secondary evidence, which is allowed only when primary evidence cannot be had.
     2. A primary obligation is one which is the principal object of the contract; for example, the primary obligation of the seller is to deliver the thing sold, and to transfer the title to it. It is distinguished from the accessory or secondary obligation to pay damages for not doing so. 1 Bouv. Inst. n. 702.

References in periodicals archive ?
The 3-year survival rates according to the type of treatment were 82% for surgery plus radiation (9 of 11 patients), 33% for primary radiation only (1 of 3), and 63% for surgery only (5 of 8) (figure 2).
2) The four criteria are (1) a history of primary radiation for a benign process or a malignancy without osteoblastic activity, (2) the presence of a bony sarcoma arising within the path of the radiation beam, (3) a long asymptomatic period, and (4) the presence of histologically proven osteosarcoma.
If the tumor is deemed unresectable or if resection imposes unacceptable morbidity, primary radiation therapy may be considered as a palliative measure.