Root Word Dictionary R–S

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Edited by Eugene M. McCarthy, PhD      

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Root Word Dictionary is the most comprehensive online dictionary providing meanings for the Greek and Latin root words used in constructing biological and medical terminology. It defines more biomedical roots than any other online source. For more details about how to use this dictionary, click here.

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       Greek Roots:
 Latin Roots:
     

rachis — Spine.

rein — Flow.

rhaphe — Stitching, sewing.

rhegma — A breakage or fracture.

rhegnumi — To break asunder, rend.

rheos — Current.

rhis — Nose, snout.

rhiza — Root.


sakcharon — Sugar.

salpinx — Tube.

sapros — Rotten.

sarx — Flesh.

saura — Lizard.

schizein — To split or cleave.

sepsisPutrefaction.

sialonSaliva.

sideros — Iron.

sitos — Grain.

skleros — Hard.

skolios — Crooked.

skolex — Worm, grub.

skopein — To examine.

soma — Body.

spasmos — Convulsion.

speira — Coil.

sperma — Seed, semen, race, origin.

sphen — Wedge.

sphygmos — Pulse.

splangchnon — Internal organ.

sporos — Sowing, seed, offspring, semen.

staphyle — Bunch of grapes.

stasis — Condition of standing.

statos — Standing.

stear — Fat, tallow.

stemon — Warp, thread.

stenos — Narrow.

stethos — Chest.

stoma, stomat- — Mouth.

streptos — To be bent or turned.

stylos — Pillar.

syn — Together.

syrinx — Pipe or tube.

rabidus, rabida, rabidum — Mad, raging, crazy.

radius, radi(i) — Ray.

re- — Again.

regina, reginae — Queen.

renunculus, renunculiKidney.

respiratio, respirationis — Breathing.

rete, retis — Net, snare.

retro — Backwards, behind, on the back; formerly.

rex, regis — King.

rota, rotae — Wheel.

rufus, -a, -um — Red, ruddy.

ruga, rugae — Wrinkle, crease, fold.

rus, ruris — Country (rural area), countryside, farm.

rutilus, -a, -um — Red, orange.

rutundus, -a, -um — Round, circular, spherical, wheel-like.


sacrumSacrum.

saeta, saetae — Hair, bristle.

sanguis, sanguinis — Blood.

semen — Seed.

semi — Half.

separare — To separate.

septem, septimus -a -um, — Seven.

sesqui — One and a half times.

sex, sextus — Six.

simia, simiae — Ape, monkey.

sinister, sinistra — Left.

species, speciei — Appearance.

spirare — To breathe; blow; live.

squama — Scale.

stercus, stercoris — Filth, dung, manure.

stratum, strati — Bed, blanket.

strix, strigis — Screech owl; vampire.

sub — Under, beneath, behind, during.

sulfur, sulfuris — Brimstone, sulfur; lightning.

super — Above, on top, upon, over, upwards.



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