radio detection and ranging
         n 1: measuring instrument in which the echo of a pulse of
               microwave radiation is used to detect and locate distant
               objects [syn: {radar}, {microwave radar}, {radio detection
               and ranging}, {radiolocation}]

English Dictionary: radio detection and ranging	by the DICT Development Group
From WordNet (r) 3.0 (2006) [wn]:
rat-a-tat n a series of short sharp taps (as made by strokes on a drum or knocks on a door) Synonym(s): rat-a-tat-tat, rat-a-tat, rat-tat
From WordNet (r) 3.0 (2006) [wn]:
rat-a-tat-tat n a series of short sharp taps (as made by strokes on a drum or knocks on a door) Synonym(s): rat-a-tat-tat, rat-a-tat, rat-tat
From WordNet (r) 3.0 (2006) [wn]:
ready-to-eat adj food products that are prepared in advance and can be eaten as sold
From WordNet (r) 3.0 (2006) [wn]:
redheaded adj having red hair and usually fair skin
From WordNet (r) 3.0 (2006) [wn]:
redheaded woodpecker n black-and-white North American woodpecker having a red head and neck Synonym(s): redheaded woodpecker, redhead, Melanerpes erythrocephalus
From WordNet (r) 3.0 (2006) [wn]:
rotated adj turned in a circle around an axis [syn: rotated, revolved]
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Radiate \Ra"di*ate\, v. i. [imp. & p. p. {Radiated}; p. pr. &       vb. n. {Radiating}.] [L. radiatus, p. p. of radiare to       furnish with spokes or rays, to radiate, fr. radius. See       {Radius}, {Ray} a divergent line.]       1. To emit rays; to be radiant; to shine.                         Virtues shine more clear In them [kings], and                      radiant like the sun at noon.            --Howell.          2. To proceed in direct lines from a point or surface; to             issue in rays, as light or heat.                         Light radiates from luminous bodies directly to our                      eyes.                                                --Locke.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Radiated \Ra"di*a`ted\, a.       1. Emitted, or sent forth, in rays or direct lines; as,             radiated heat.          2. Formed of, or arranged like, rays or radii; having parts             or markings diverging, like radii, from a common center or             axis; as, a radiated structure; a radiated group of             crystals.          3. (Zo[94]l.) Belonging to the Radiata.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ratitate \Rat"i*tate\, a. (Zo[94]l.)       Of or pertaining to the Ratit[91].
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Ready-witted \Read"y-wit`ted\, a.       Having ready wit.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Redhead \Red"head`\ (-h?d`), n.       1. A person having red hair.          2. (Zo[94]l.)             (a) An American duck ({Aythya Americana}) highly esteemed                   as a game bird. It is closely allied to the                   canvasback, but is smaller and its head brighter red.                   Called also {red-headed duck}. {American poachard},                   {grayback}, and {fall duck}. See Illust. under                   {Poachard}.             (b) The red-headed woodpecker. See {Woodpecker}.          3. (Bot.) A kind of milkweed ({Asclepias Curassavica}) with             red flowers. It is used in medicine.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Rotate \Ro"tate\, v. i. [imp. & p. p. {Rotated}; p. pr. & vb. n.       {Rotating}.]       1. To turn, as a wheel, round an axis; to revolve.          2. To perform any act, function, or operation in turn, to             hold office in turn; as, to rotate in office.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Rotated \Ro"ta*ted\, a.       Turned round, as a wheel; also, wheel-shaped; rotate.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Rowdydowdy \Row"dy*dow`dy\, a.       Uproarious. [Vulgar]