| tac-, -tic- |
be silent |
Latin |
tacere, tacitus |
reticent, reticence, tacit, taciturn |
| tach- |
swift |
Greek |
ταχύς (tachus) |
tachometer, tachycardia |
| taeni- |
ribbon |
Greek |
ταινία (tainia) |
taenidium, taeniodont, Taeniolabis |
| tal- |
ankle |
Latin |
talus |
talus bone |
| tang-, -ting-, tact-, tag- |
touch |
Latin |
tangere (past participle tactus) |
attain, contact, contagious, contingent, contingency, contiguous, intact, tactile, tangent, tangible |
| tapet- |
carpet |
Latin |
tapete, tapetis |
tapestry, tapetum, tapis |
| tard- |
slow |
Latin |
tardus |
retard, tardigrade, tardy |
| tars- |
ankle |
Greek |
ταρσός (tarsos, a flat basket) |
tarsal |
| taur- |
bull |
Greek |
ταῦρος (tauros) |
Minotaur |
| taur- |
bull |
Latin |
taurus |
Taurus |
| tax- |
arrangement, order |
Greek |
τάξις (taxis) |
taxonomy |
| techn- |
art, skill |
Greek |
τέχνη (technē) |
technology |
| teg-, tect- |
cover |
Latin |
tegere, tectus |
integument, protection |
| tele- |
far, end |
Greek |
τῆλε (tēle) |
telecast, telegram, telegraph, telepathy, telephone, telescope, television |
| tele- |
complete |
Greek |
τέλος (telos) |
teleology |
| temn- |
cut |
Greek |
τέμνω (temnō) |
Temnospondyli |
| tempor- |
time |
Latin |
tempus, temporis |
contemporaneous, contemporary, extemporaneous, tempo, temporal, temporary |
| ten-, -tin-, tent- |
hold |
Latin |
tenere, tentus |
abstain, contain, content, contents, continence, continent,
continue, countenance, detain, detention, entertain, maintain, pertain,
pertinacious, pertinacity, pertinent, retention, tenacious, tenacity,
tenant, tenet, tenor, untenable |
| tend-, tens- |
stretch, strain |
Latin |
tendere (past participle tensus) |
attend, contend, contention, contentious, extend, extension, extent,
intend, ostensible, ostentatious, portend, portent, portentous,
pretense, tend, tendentious, tendency, tender, tensile, tension |
| tenu- |
slender, thin |
Latin |
tenuare "make thin", from tenuis "thin" |
attenuate, extenuate, tenuous |
| tep- |
be warm |
Latin |
tepere |
tepid, tepor |
| ter-, trit- |
rub |
Latin |
terere, tritus |
attrition, contrite, detritus, trite |
| teret- |
rounded |
Latin |
teres, teretis |
subterete, teretial |
| terg-, ters- |
wipe |
Latin |
tergere, tersus |
detergent, terse |
| termin- |
boundary, limit, end |
Latin |
terminus |
determine, terminal, termination |
| tern- |
three each |
Latin |
terni |
ternary, ternion |
| terr- |
earth |
Latin |
terra |
inter, subterranean, terrace, terracotta, terrain, terrarium, terrestrial, territory |
| terti- |
third |
Latin |
tertius |
tertian, tertiary |
| test- |
witness |
Latin |
testis |
attest, contest, detest, protest, testament, testify, testimony |
| tetr- |
four |
Greek |
τέσσαρες (tessares) |
tetrahedron, tetrode |
| tex-, text- |
weave |
Latin |
texere, textus |
context, subtle, pretext, text, textile, texture |
| thalam- |
chamber, bed |
Greek |
θάλαμος (thalamos) |
hypothalamus |
| thalass- |
sea |
Greek |
θάλασσα (thalassa) |
Panthalassa, thalassemia |
| than- |
death |
Greek |
θάνατος (thanatos) |
euthanasia, thanatology |
| the-, thus- |
god |
Greek |
θεός (theos) |
atheism, enthusiasm, monotheism, polytheism, theology |
| the- |
put |
Greek |
τίθημι (tithēmi), θήκη (thēkē) |
antithesis, Bibliotheca, deem, doom, epithet, hypothesis, synthesis, theca, thematic, theme, Themis, thesis |
| thel- |
nipple |
Greek |
θηλή (thēlē) |
epithelium, thelium, thelial |
| theori- |
speculation |
Greek |
θεωρία (theōria) |
theorem, theory |
| ther- |
beast, animal |
Greek |
θήρ, θηρός (thēr) |
theroid, theropod |
| therm- |
heat, warm |
Greek |
θερμός (thermos) |
thermal, endotherm, hypothermia, thermometer, thermos, thermostat |
| thym- |
mood |
Greek |
θυμός (thumos) |
dysthymia |
| thyr- |
door |
Greek |
θύρα (thura) |
thyratron |
| thyre- |
large shield |
Greek |
θυρεός (thureos) |
Thyreophora, thyroid, thyrotropin, thyroxine |
| tim- |
be afraid |
Latin |
timere |
timid, timorous |
| -tim- |
most |
Latin |
-timus, e.g. in intimus "inmost", optimus "best", ultimus "last" |
intimate, intimation, optimum, ultimate |
| ting-, tinct- |
moisten |
Latin |
tingere, tinctus |
tincture |
| tom- |
cut |
Greek |
τομή (tome), τόμος (tomos) |
anatomy, appendectomy, atom, dichotomy, ectomy, embolectomy, tome, tonsillectomy, vasectomy |
| ton- |
stretch |
Greek |
τόνος (tonos) |
isotonic, monotone, tone |
| top- |
place |
Greek |
τόπος (topos) |
atopy, isotope, topiary, topic, topography, topology, toponymy, utopia |
| torn-, tourn- |
turn or rotate |
Latin from Greek |
tornare < τόρνος (tornos) |
tornado, tournament |
| torpe- |
be numb |
Latin |
torpere |
torpent, torpid, torpor |
| torqu-, tort- |
twist |
Latin |
torquere, tortus |
contort, distort, extort, extortion, retort, torque, torsion, tortuous, torture |
| tot- |
all, whole |
Latin |
totus |
subtotal, total, totality |
| tox- |
arrow, bow |
Greek |
τόξον (toxon) |
antitoxin, intoxicate, toxic, toxology, toxoplasmosis |
| trab- |
beam |
Latin |
trabs, trabis |
trabeculae |
| trachy- |
rough |
Greek |
τραχύς (trachus) |
trachea |
| trag- |
goat |
Greek |
τράγος (tragos) |
tragus |
| trah-, tract- |
draw, pull |
Latin |
tractare, frequentative of trahere, tractus |
attract, contract, detract, retract, subtract, subtrahend, tractable, traction, tractor |
| trans-, tra-, tran- |
across |
Latin |
trans |
intransigent, tradition, transact, transcend, transient, transitory, transport |
| trapez- |
four-sided, table |
Greek |
τράπεζα (trapeza) |
trapezius, trapezoid |
| traum- |
wound |
Greek |
τραῦμα (trauma) |
trauma, traumatic, traumatize |
| trecent- |
three hundred |
Latin |
trecenti |
trecentennial, trecentillion |
| tredec- |
thirteen |
Latin |
tredecim |
tredecimal |
| treiskaidek- |
thirteen |
Greek |
τρεισκαίδεκα (treiskaideka) |
triskaidekaphobia |
| trem- |
tremble |
Latin |
tremere |
tremor |
| trema- |
hole |
Greek |
τρῆμα (trēma) |
monotreme, trematode |
| trepid- |
tremble |
Latin |
trepidare "to tremble, hurry", from trepidus "alarmed, scared" |
intrepid, trepid, trepidation |
| tri- |
three |
Greek |
τρεῖς, τρία (treis, tria) |
triad, trigon, triode, tripod |
| tri- |
three |
Latin |
trēs |
triangle, triumvirate, trivia |
| trib- |
rub |
Greek |
τρίβειν (tribein) |
diatribe, tribology |
| tribu- |
pay |
Latin |
tribuere "to pay", from tribus |
attribute, contribute, retribution, tribe, tribulation, tribunal, tribune, tributary, tribute |
| tricen- |
thirty each |
Latin |
triceni |
tricenary |
| tricesim-, trigesim- |
thirtieth |
Latin |
tricesimus |
trigesimal |
| trich- |
hair |
Greek |
θρίξ, τριχός (thrix, trichos) |
peritrichous, trichopathophobia, Trichoptera |
| trin- |
three each |
Latin |
trini |
trinary, trine, trinity |
| trit- |
third |
Greek |
τρίτος (tritos) |
tritagonist |
| tritic- |
wheat |
Latin |
triticum |
triticale |
| troch- |
wheel |
Greek |
τροχός (trochos) |
trochlea |
| trop- |
turning |
Greek |
τρόπος (tropos) |
contrive, heliotropism, isotrope, psychotropic, retrieve, trope, tropic, tropism, troposphere, troubadour, trove |
| troph- |
feed, grow |
Greek |
τροφή, τροφός (trophos) |
dystrophy, pogonotrophy, trophic |
| truc- |
fierce |
Latin |
trux, trucis |
truculent |
| trud-, trus- |
thrust |
Latin |
trudere, trusus |
extrusion, intrude |
| trunc- |
cut off |
Latin |
truncare "to maim, mutilate", from truncus "mutilated, cut off" |
trench, trenchant, truncate, truncheon, trunk |
| tum- |
to swell up |
Latin |
tumere |
contumely, contumacious, tumid, tumor, tumular, tumulose, tumulous, tumult, tumultuous |
| turb- |
disturb |
Latin |
turba |
disturb, perturb, turbid, turbine, turbulent, |
| tuss- |
cough |
Latin |
tussis, tussire |
pertussis |
| tympan- |
drum |
Greek |
τύμπανον (tumpanon) |
tympani |
| typ- |
stamp, model |
Greek |
τύπος (tupos) |
archetype, phenotype, prototype, type, typewriter, typical, typify, typography, typology |