Page 382 - WEBSTER Essential vocabulary

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Essential Vocabulary
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Prefix/Suffix Meaning/Usage
hydro- 1. water (hydrometer); 2. containing hydrogen (hydrochloric)
-iatry treatment (psychiatry)

-ic having to do with (volcanic)
-ide the end of the second name in a compound whose molecule
contains exactly two atoms (sodium chloride)
idio- one’s own, personal (idiosyncrasy)
il- same as in- used before l

im- same as in- used before b, m, or p
in- in, into, within, (inside); toward (inward); also used to inten-
sify some words of Latin origin (inbreed, induct, infer)
-ine having the nature of; like (crystalline)
inter- between or among (interval); 2. together (interact)

intra- within, inward (intramural)
intro- same as intra- (introvert)

ir- same as in- used before r
-ism 1. condition of being (pauperism); 2. devotion to
(nationalism)

iso- equal, similar, alike (isobar)
-ist 1. one who does or participates in an -ism (satirist); 2. an expert
at something (scientist); 3. a believer or adherent to (atheist)
-istic, -istical the former of adjectives relating to an action (artistic, egotistical)
-ite 1. inhabitant or native of (Brooklynite); 2. a salt of (halite); 3.
a certain rock (lignite); 4. a descendant of (Israelite)
-itis an inflammatory disease (tonsilitis)

-lepsy a fit or attack (epilepsy)
-let 1. small, diminutive (starlet); 2. small object worn as a band
on the body (anklet)
lipo- fatty (liposuction)
-lith, -lithic stone (batholith, neolithic)

-logy study of (biology)