A person who uses scientific knowledge to solve practical problems.

synonyms: applied scientist, technologist.

Roget 726: combatant; disputant, controversialist, polemic, litigant, belligerent; competitor, rival, corrival^†; fighter, assailant; champion, Paladin; mosstrooper^†, swashbuckler fire eater, duelist, bully, bludgeon man, rough.    prize fighter, pugilist, boxer, bruiser, the fancy, gladiator, athlete, wrestler; fighting-cock, game-cock; warrior, soldier, fighting man, Amazon, man at arms, armigerent^†; campaigner, veteran; swordsman, sabreur^†, redcoat, military man, Rajput.    armed force, troops, soldiery, military forces, sabaoth^†, the army, standing army, regulars, the line, troops of the line, militia, yeomanry, volunteers, trainband, fencible^†; auxiliary, bersagliere^†, brave; garde-nationale, garde-royale [Fr.]; minuteman [U.S.]; auxiliary forces, reserve forces; reserves, posse comitatus [Lat.], national guard, gendarme, beefeater; guards, guardsman; yeomen of the guard, life guards, household troops.    janissary; myrmidon; Mama, Mameluke; spahee^†, spahi^†, Cossack, Croat, Pandoz.    irregular, guerilla, partisan, condottiere^†; franctireur [Fr.], tirailleur^†, bashi-bazouk; [guerilla organization names: list], vietminh, vietcong; shining path; contras; huk, hukbalahap.    mercenary, soldier of fortune; hired gun, gunfighter, gunslinger; bushwhacker, free lance, companion; Hessian.    hit man torpedo, soldier.    levy, draught; Landwehr [G.], Landsturm [G.]; conscript, recruit, cadet, raw levies.    infantry, infantryman, private, private soldier, foot soldier; Tommy Atkins^†, rank and file, peon, trooper, sepoy^†, legionnaire, legionary, cannon fodder, food for powder; officer etc. (commander) 745; subaltern, ensign, standard bearer; spearman, pikeman^†; spear bearer; halberdier^†, lancer; musketeer, carabineer^†, rifleman, jager [G.], sharpshooter, yager^†, skirmisher; grenadier, fusileer^†; archer, bowman.    horse and foot; horse soldier; cavalry, horse, artillery, horse artillery, light horse, voltigeur [Fr.], uhlan, mounted rifles, dragoon, hussar; light dragoon, heavy dragoon; heavy; cuirassier [Fr.]; Foot Guards, Horse Guards.    gunner, cannoneer, bombardier, artilleryman^†, matross^†; sapper, sapper and miner; engineer; light infantry, rifles, chasseur [Fr.], zouave; military train, coolie.    army, corps d'armee [Fr.], host, division, battalia^†, column, wing, detachment, garrison, flying column, brigade, regiment, corps, battalion, sotnia^†, squadron, company, platoon, battery, subdivision, section, squad; piquet, picket, guard, rank, file; legion, phalanx, cohort; cloud of skirmishers.    war horse, charger, destrier.    marine, man-of-war's man etc. (sailor) 269; navy, wooden walls, naval forces, fleet, flotilla, armada, squadron.    [ships of war] man-of-war; destroyer; submarine; minesweeper; torpedo-boat, torpedo-destroyer; patrol torpedo boat, PT boat; torpedo-catcher, war castle, H.   M.S.; battleship, battle wagon, dreadnought, line of battle ship, ship of the line; aircraft carrier, carrier.    flattop [Coll.]; helicopter carrier; missile platform, missile boat; ironclad, turret ship, ram, monitor, floating battery; first-rate, frigate, sloop of war, corvette, gunboat, bomb vessel; flagship, guard ship, cruiser; armored cruiser, protected cruiser; privateer.    [supporting ships] tender; store ship, troop ship; transport, catamaran; merchant marine.    ... show more

Roget 463: experiment; essay etc. (attempt) 675; analysis etc. (investigation) 461; screen; trial, tentative method, t=atonnement.    verification, probation, experimentum crucis [Lat.], proof, (demonstration) 478; criterion, diagnostic, test, probe, crucial test, acid test, litmus test.    crucible, reagent, check, touchstone, pix^†; assay, ordeal; ring; litmus paper, curcuma paper^†, turmeric paper; test tube; analytical instruments etc. 633.    empiricism, rule of thumb.    feeler; trial balloon, pilot balloon, messenger balloon; pilot engine; scout; straw to show the wind.    speculation, random shot, leap in the dark.    analyzer, analyst, assayist^†; adventurer; experimenter, experimentist^†, experimentalist; scientist, engineer, technician.    subject, experimentee^†, guinea pig, experimental animal.    [experimental method] protocol, experimental method, blind experiment, double-blind experiment, controlled experiment.    poll, survey, opinion poll.    epidemiological survey [Med.], retrospective analysis, retrospective survey, prospective survey, prospective analysis; statistical analysis.    literature search, library research.    tryout, audition.    [results of experiment] discovery etc. 480; measurement etc. 466; evidence etc. 467.    [reasoning about an experiment] deduction, induction, abduction.    ... show more

Roget 690: doer, actor, agent, performer, perpetrator, operator; executor, executrix; practitioner, worker, stager.    bee, ant, working bee, termite, white ant; laboring oar, servant of all work, factotum.    workman, artisan; craftsman, handicraftsman; mechanic, operative; working man; laboring man; demiurgus, hewers of wood and drawers of water, laborer, navvy^†; hand, man, day laborer, journeyman, charwoman, hack; mere tool etc. 633; beast of burden, drudge, fag; lumper^†, roustabout.    maker, artificer, artist, wright, manufacturer, architect, builder, mason, bricklayer, smith, forger, Vulcan; carpenter; ganger, platelayer; blacksmith, locksmith, sailmaker, wheelwright.    machinist, mechanician, engineer.    sempstress^†, semstress^†, seamstress; needlewoman^†, workwoman; tailor, cordwainer^†.    minister etc. (instrument) 631; servant etc. 746; representative etc. (commissioner) 758, (deputy) 759.    coworker, party to, participator in, particeps criminis [Lat.], dramatis personae [Lat.]; personnel.    ... show more

Dutch: technoloog, ingenieur, onderhoudstechnicus, techneut, technicus
Polish: inżynier

The operator of a railway locomotive.

synonyms: engine driver, locomotive engineer, railroad engineer.

Roget 268: traveler, wayfarer, voyager, itinerant, passenger, commuter.    tourist, excursionist, explorer, adventurer, mountaineer, hiker, backpacker, Alpine Club; peregrinator^†, wanderer, rover, straggler, rambler; bird of passage; gadabout, gadling^†; vagrant, scatterling^†, landloper^†, waifs and estrays^†, wastrel, foundling; loafer; tramp, tramper; vagabond, nomad, Bohemian, gypsy, Arab^†, Wandering Jew, Hadji, pilgrim, palmer; peripatetic; somnambulist, emigrant, fugitive, refugee; beach comber, booly^†; globegirdler^†, globetrotter; vagrant, hobo [U.S.], night walker, sleep walker; noctambulist, runabout, straphanger, swagman, swagsman [Austral.]; trecker^†, trekker, zingano^†, zingaro^†.    runner, courier; Mercury, Iris, Ariel^†, comet.    pedestrian, walker, foot passenger; cyclist; wheelman.    rider, horseman, equestrian, cavalier, jockey, roughrider, trainer, breaker.    driver, coachman, whip, Jehu, charioteer, postilion, postboy^†, carter, wagoner, drayman^†; cabman, cabdriver; voiturier^†, vetturino^†, condottiere^†; engine driver; stoker, fireman, guard; chauffeur, conductor, engineer, gharry-wallah^†, gari-wala^†, hackman, syce^†, truckman^†.    ... show more

Dutch: machinist
Polish: maszynista

Design as an engineer.

Plan and direct (a complex undertaking).

synonyms: direct, mastermind, orchestrate, organise, organize.