1.  engineering(n = noun.act) technology - the practical application of science to commerce or industry;
is a kind of profession, application, practical application
has particulars: aeronautical engineering, automotive engineering, automotive technology, chemical engineering, communications technology, computer technology, high tech, high technology, rail technology, railroading
Derived form verb engineer₁

2.  engineering(n = noun.cognition) applied science, engineering science, technology - the discipline dealing with the art or science of applying scientific knowledge to practical problems; "he had trouble deciding which branch of engineering to study"
is a kind of bailiwick, discipline, field, field of study, study, subject, subject area, subject field
has particulars: aeronautical engineering, bionics, bioengineering, biotechnology, ergonomics, chemical engineering, civil engineering, ee, electrical engineering, computer science, computing, architectural engineering, industrial engineering, industrial management, information technology, it, mechanical engineering, nanotechnology, nuclear engineering, naval engineering, rocketry

3.  engineering(n = noun.artifact) engine room - a room (as on a ship) in which the engine is located;
is a kind of room

   Originally, the art of managing engines; in its modern and extended sense, the art and science by which the properties of matter are made useful to man, whether in structures, machines, chemical substances, or living organisms; the occupation and work of an engineer. In the modern sense, the application of mathematics or systematic knowledge beyond the routine skills of practise, for the design of any complex system which performs useful functions, may be considered as engineering, including such abstract tasks as designing software (software engineering). [1913 Webster]
" In a comprehensive sense, engineering includes architecture as a mechanical art, in distinction from architecture as a fine art. It was formerly divided into military engineering, which is the art of designing and constructing offensive and defensive works, and civil engineering, in a broad sense, as relating to other kinds of public works, machinery, etc. -- Civil engineering, in modern usage, is strictly the art of planning, laying out, and constructing fixed public works, such as railroads, highways, canals, aqueducts, water works, bridges, lighthouses, docks, embankments, breakwaters, dams, tunnels, etc. -- Mechanical engineering relates to machinery, such as steam engines, machine tools, mill work, etc. -- Mining engineering deals with the excavation and working of mines, and the extraction of metals from their ores, etc. Engineering is further divided into steam engineering, gas engineering, agricultural engineering, topographical engineering, electrical engineering, etc." [1913 Webster]

engineering, n. the application of science to the design, building, and use of machines, constructions, etc.

Idiom:
engineering science engineering as a field of study.

N  instrument, machinery, mechanism, engineering, instrument, organ, tool, implement, utensil, machine, engine, lathe, gin, mill, air engine, caloric engine, heat engine, gear, tackle, tackling, rig, rigging, apparatus, appliances, plant, materiel, harness, trappings, fittings, accouterments, barde, equipment, equipmentage, appointments, furniture, upholstery, chattels, paraphernalia, mechanical powers, lever, leverage, mechanical advantage, crow, crowbar, handspike, gavelock, jemmy, jimmy, arm, limb, wing, oar, paddle, pulley, wheel and axle, wheelwork, clockwork, wheels within wheels, pinion, crank, winch, cam, pedal, capstan, wheel, inclined plane, wedge, screw, spring, mainspring, can hook, glut, heald, heddle, jenny, parbuckle, sprag, water wheel, handle, hilt, haft, shaft, heft, shank, blade, trigger, tiller, helm, treadle, key, turnscrew, screwdriver, knocker, hammer, edge tool, borer, vice, teeth, nail, rope, peg, support, spoon, arms, oar, cardiograph, recapper, snowplow, tenpenny, votograph, instrumental, mechanical, machinal, brachial.

aeronautical engineering, architectural engineering, automotive engineering, bachelor of science in engineering, biomedical engineering, chemical engineering, civil engineering, electrical engineering, engineering school, engineering science, genetic engineering, hydraulic engineering, industrial engineering, knowledge engineering, master of science in engineering, mechanical engineering, naval engineering, nuclear engineering