a part of a river where the current is very fast
done or occurring in a brief period of time
"a rapid rise through the ranks"
characterized by speed; moving with or capable of moving with high speed
"a rapid movement"; "a speedy car"; "a speedy errand boy"
a rough section of a river or stream which is difficult to navigate due to the swift and turbulent motion of the water.
Describes a process or concept which occurs quickly.
very swift or quick; moving with celerity; fast; as, a rapid stream; a rapid flight; a rapid motion
advancing with haste or speed; speedy in progression; in quick sequence; as, rapid growth; rapid improvement; rapid recurrence; rapid succession
quick in execution; as, a rapid penman
the part of a river where the current moves with great swiftness, but without actual waterfall or cascade; -- usually in the plural; as, the Lachine rapids in the St. Lawrence
Origin: [L. rapidus, fr. rapere to seize and carry off, to snatch or hurry away; perhaps akin to Gr. 'arpa`zein: cf. F. rapide. Cf. Harpy, Ravish.]
A rapid is a section of a river where the river bed has a relatively steep gradient causing an increase in water velocity and turbulence. A rapid is a hydrological feature between a run and a cascade. A rapid is characterised by the river becoming shallower and having some rocks exposed above the flow surface. As flowing water splashes over and around the rocks, air bubbles become mixed in with it and portions of the surface acquire a white colour, forming what is called "whitewater". Rapids occur where the bed material is highly resistant to the erosive power of the stream in comparison with the bed downstream of the rapids. Very young streams flowing across solid rock may be rapids for much of their length. Rapids are categorized in classes, generally running from I to VI. A Class 5 rapid may be categorized as Class 5.1-5.9. While class I rapids are easy to negotiate and require no maneuvering, class VI rapids pose threat to life with little or no chance for rescue.
Chambers 20th Century Dictionary
rap′id, adj. hurrying along: very swift: speedy.—n. that part of a river where the current is most rapid (gen. in pl.).—n. Rapid′ity, quickness of motion or utterance: swiftness: velocity.—adv. Rap′idly.—n. Rap′idness. [Fr. rapide—L. rapidus—rapĕre, to seize.]
Dictionary of Nautical Terms
A slope, down which water runs with more than ordinary rapidity, but not enough to be called a "fall;" and sometimes navigable by boats.
British National Corpus
Spoken Corpus Frequency
Rank popularity for the word 'Rapid' in Spoken Corpus Frequency: #2770
Rank popularity for the word 'Rapid' in Adjectives Frequency: #380
The numerical value of Rapid in Chaldean Numerology is: 7
The numerical value of Rapid in Pythagorean Numerology is: 3