Prefixes

Question 1

A-, an-

Answer 1

Without, lack of, not

Afebrile (without fever)
Anemia (lack of blood)

Question 2

Ab-

Answer 2

Away from

Abductor (leading away from)
Aboral (away from mouth)

Question 3

Ad-

Answer 3

Toward, to, near

Adductor (leading toward)
Adrenal (near the kidney)

Question 4

Ambi-, amphi-, ampho-

Answer 4

Both

Ambidextrous (ability to use both hands equally)
Amphoteric (both acid and base)
Amphibious (living both on land and in water)

Question 5

Ana-

Answer 5

Up, toward, apart

Anatomy (to cut apart)
Anabolism (building up)

Question 6

Ante-

Answer 6

Before, in front of, forward

Antenatal (before birth)
Antemortem (before death)

Question 7

Anti-

Answer 7

Against, opposing

Antisepsis (against infection)
Antibiotic (against microbial life)

Question 8

Apo-

Answer 8

Separation from, derived from

Apocrine (secretion containing cell parts
Apomorphine (drug derived from morphine)

Question 9

Auto-

Answer 9

Self

Autogenous (self-generating)
Autolysis (self-dissolving)

Question 10

Bi-

Answer 10

Two, double, twice

Biceps (muscle with two heads)
Bifurcate (divide into two branches)

Question 11

Cata-

Answer 11

Down, under, lower, against

Catabolism (breaking down)
Catalepsy (reduced movement)

Question 12

Circum-

Answer 12

Around

Circumflex (winding around)
Circumanal (surrounding the anus)

Question 13

Co-, com-, con-

Co- before a vowel
Com- before b, m, and p

Answer 13

With, together

Commissure (coming together)
Conductor (leading together)

Question 14

Contra-

Answer 14

Opposed, against

Contralateral (opposite side)
Contraception (prevention of conception)

Question 15

De-

Answer 15

Reverse, remove

Dehydrate (remove water from)
Defibrillate (stop fibrillation)

Question 16

Di-

Answer 16

Two, twice

Diphasic (having two stages)
Dichromic (having two colors)

Question 17

Dia-

Answer 17

Between, through, apart, across, completely

Diapedesis (ooze through)
Diaphragm (wall across)
Diagnosis (complete knowledge)

Question 18

Dis-

Answer 18

Apart from, free from

Disinfection (to free from infection)
Dissect (cut apart)
Disarticulation (separation at a joint)

Question 19

Dys-

Answer 19

Difficult, painful, abnormal

Dyspnea (difficult breathing)
Dyscrasia (abnormal condition)
Dysuria (difficult or painful urination)

Question 20

E-, ec-, ex-

Answer 20

Out of, from, away from

Enucleate (remove whole from)
Ectopic (out of place)
Exostosis (outgrowth of bone)

Question 21

Ecto-, exo-

Answer 21

Outer, outside, situated on

Ectoderm (outer skin
Ectoparasite (organism living on the outside)
Exogenous (originating outside)

Question 22

Em-, en-

Em- before b, m, and p

Answer 22

In

Empyema (pus in)
Enzootic (in a population of animals)

Question 23

Endo-

Answer 23

Within, inner

Endogenous (originating inside)
Endoplasm (inner portion of cytoplasm)
Endoderm (inner cell layer)

Question 24

Ep-, epi-

Answer 24

Upon, on, over, above

Epicostal (upon a rib)
Epidermis (outer skin layer)

Question 25

Eu-

Answer 25

Normal, good, well, healthy Eupnea (normal breathing) Euthanasia (inducing death painlessly)

Question 26

Extra-

Answer 26

Outside of, beyond Extracellular (outside the cells) Extraocular (outside the eye)

Question 27

Hemi-

Answer 27

Half Hemiplegia (paralysis of one side of the body) Hemisphere (half of a sphere or globe)

Question 28

Hyper-

Answer 28

Excessive, above, beyond Hyperactive (overactive) Hyperesthesia (excessive sensitivity)

Question 29

Hyp-, hypo-

Answer 29

Under, deficient, beneath Hypoxia (reduced oxygen) Hypothyroidism (deficiency of thyroid activity)

Question 30

Im-, in- Im- before b, m, and p

Answer 30

In, into, within, not Implant (insert into) Injection (forcing fluid into) Immature (not mature) Involuntary (not voluntary)

Question 31

Infra-

Answer 31

Below, beneath Infraorbital (beneath eye) Infrastructure (underlying support system)

Question 32

Inter-

Answer 32

Between Intercostal (between ribs) Internodal (between nodes)

Question 33

Intra-

Answer 33

Within Intracardiac (within heart) Intraocular (within the eye)

Question 34

Intro-

Answer 34

Into, within Introversion (turning inward) Introduce (lead into)

Question 35

Mes-, meso-

Answer 35

Middle Mesencephalon (midbrain) Mesoderm (middle cell layer)

Question 36

Meta-

Answer 36

Change, beyond, after Metacarpus (bone beyond the carpus) Metamorphosis (change shape or structure)

Question 37

Micr-, micro-

Answer 37

Small Microphthalmos (abnormally small eye) Microbe (minute organism)

Question 38

Mult-, multi-

Answer 38

Many Multiangular (many angles) Multiform (many shapes)

Question 39

Neo-

Answer 39

New, recent Neoplastic (new tissue growth) Neonatal (newborn)

Question 40

Pan-

Answer 40

All, entire Panacea (cure-all) Panzootic (throughout an animal population)

Question 41

Para-

Answer 41

Beside, beyond Paravertebral (beside the vertebrae) Paranormal (beyond scientific explanation)

Question 42

Per-

Answer 42

Through, excessive Permeable (may pass through) Peracute (excessively sharp)

Question 43

Peri-

Answer 43

Around Periosteum (around bone) Peribulbar (around eye bulb)

Question 44

Poly-

Answer 44

Many, much, excessive Polycystic (many cysts) Polydipsia (excessive thirst)

Question 45

Post-

Answer 45

After, behind Postoperative (after surgery) Postorbital (behind the eye)

Question 46

Pre-, pro-

Answer 46

Before, in front of Prenatal (before birth) Project (throw forward)

Question 47

Pseudo-

Answer 47

False Pseudoparasite (false parasite) Pseudocyesis (false pregnancy)

Question 48

Re-

Answer 48

Again, backward Reflex (bend back) Regurgitation (vomiting)

Question 49

Retro-

Answer 49

Backward, behind Retrograde (going backward) Retroperitoneal (behind peritoneum)

Question 50

Semi-

Answer 50

Half, partial Semilunar (half-moon shaped) Semipermeable (partly permeable)

Question 51

Sub-

Answer 51

Under, beneath Subcutaneous (under the skin) Sublingual (beneath the tongue)

Question 52

Super-, supra-

Answer 52

Above, superior, excess Supernumerary (excessive number) Suprarenal (above kidneys)

Question 53

Sym-, syn Sym- before b, m, p, and ph

Answer 53

Together, with Symbiosis (two organisms living in close association) Syndactyly (fusion of digits)

Question 54

Trans-

Answer 54

Across, through Transection (cut across) Transfix (to pierce across)

Question 55

Ultra-

Answer 55

Beyond, excess Ultravirus (very small virus) Ultrasonic (beyond upper limit of hearing)