Root Word and Morpheme, Prefix, and Suffix

Root Word and Morpheme, Prefix, and Suffix

1. Core Units — Root, Morpheme, Affix

Unit	Definition	Example
Morpheme	smallest meaningful unit (cannot be split further without losing meaning) — can be free (stands alone) or bound (needs root)	-ology (study), bio- (life) — bound; book — free
Root (base) word	core morpheme carrying main meaning, often Latin/Greek in technical terms	duct (lead) in conduct, deduce; spect (look) in inspect
Prefix	bound morpheme before root	pre- (before) → preview, micro- (small) → microchip
Suffix	bound morpheme after root	-tion (act) → computation, -able (can) → programmable

2. Why Root–Affix Analysis Helps Engineers

Decoding: photo- (light) + -voltaic (electricity) → photovoltaic (light to electricity) even if never seen before.

3. Common Technical Prefixes / Suffixes (memorize 8 for exam)

Affix	Meaning	Example
micro-	small	microprocessor, microscope
tele-	far	telecommunication
bio-	life	biotechnology
auto-	self	automation
-logy	study	technology, geology
-meter	measure	thermometer, parameter
-scope	see	microscope, oscilloscope
pre- / post-	before/after	pre-processing, post-processing

4. Worked Analysis

"thermodynamics" = therm (heat, Greek) + dynamics (power) + -ics (study) → study of heat power

"unprogrammable" = un- (not) + program + -m- + -able (can) = cannot be programmed (but actually un- + programmable)

"nanotechnology" = nano (10⁻⁹, small) + technology (techne + logy)

"interoperability" = inter- (between) + oper (work) + -ability (can be)

5. Exam Points

• Define morpheme (free/bound), root, prefix, suffix — 5 marks, very frequent (almost certain to ask definitions).
• Give 4 prefixes and 4 suffixes with meaning + example — 5-7 marks, very frequent (the most common affix question).
• Analyze technical term into morphemes — 5 marks, frequent (e.g., photovoltaic, microprocessor).
• Distinguish root vs base vs stem — 3 marks.