| real image | An image formed by the convergence of the actual rays of light from an object. Synonym: inverted image. (05 Mar 2000) |
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| real-time ultrasonography | Rapid serial ultrasound images produced using a phased array or scanning transducer; produces a video display of organ motion, such as heart valve or foetal motion. (05 Mar 2000) |
| realgar | <chemical> Arsenic sulphide, a mineral of a brilliant red colour; red orpiment. It is also an artificial product. Origin: F. Realgar, Sp. Rejalgar, Ar. Rahj al ghar powder of the mine. Source: Websters Dictionary (01 Mar 1998) |
| reality | That which exists objectively and in fact, and can be consensually validated. Origin: L. Res, thing, fact (05 Mar 2000) |
| reality adaptation | The ability to adjust to the world as it exists. (05 Mar 2000) |
| reality awareness | The ability to distinguish external objects as being different from oneself. (05 Mar 2000) |
| reality principle | The concept that the pleasure principle in personality development is modified by the demands of external reality; the principle or force that compels the growing child to adapt to the demands of external reality. (05 Mar 2000) |
| reality testing | The individual's objective evaluation of the external world and the ability to differentiate adequately between it and the internal world; considered to be a primary ego function. (12 Dec 1998) |
| reality therapy | A form of therapy in which the patient learns to fulfill his needs of involvement and responsibility which are basic to facing and accepting reality. (12 Dec 1998) |
| realm | 1. A royal jurisdiction or domain; a region which is under the dominion of a king; a kingdom. "The absolute master of realms on which the sun perpetually alone." (Motley) 2. Hence, in general, province; region; country; domain; department; division; as, the realm of fancy. Origin: OE. Realme, ream, reaume, OF. Reialme, roialme, F. Royaume, fr. (assumed) LL. Regalimen, from L. Regalis royal. See Regal. Source: Websters Dictionary (01 Mar 1998) |
| ream | To bevel out, as the mouth of a hole in wood or metal; in modern usage, to enlarge or dress out, as a hole, with a reamer. Origin: Cf. G. Raumen to remove, to clear away, fr. Raum room. See Room. To cream; to mantle. "A huge pewter measuring pot which, in the language of the hostess, reamed with excellent claret." (Sir W. Scott) Source: Websters Dictionary (01 Mar 1998) |
| reamer | A rotating finishing or drilling tool used to shape or enlarge a hole. Origin: A.S. Ryman, to widen (05 Mar 2000) |
| reamputation | <surgery> The second of two amputations performed upon the same member. Source: Websters Dictionary (01 Mar 1998) |
| reanimate | To animate anew; to restore to animation or life; to infuse new life, vigor, spirit, or courage into; to revive; to reinvigorate; as, to reanimate a drowned person; to reanimate disheartened troops; to reanimate languid spirits. Source: Websters Dictionary (01 Mar 1998) |
| reannealing | Renaturation of a DNA sample that has been dissociated by heating. In reannealing the two strands that recombine to form a double stranded molecule are from the same source. Differences in the rate of reannealing led to the early recognition of repetitive sequences which rapidly recombine (have low C0t values). (18 Nov 1997) |