tauto- [GK] = the same 相同

tautochronism n. [物]等时性 [chron = time] 

tautology n. 同义反复；赞述 [log = to speak] 

tautophony n. 同音反复 [phon = sound]

techno- [GK] = art and skill 技术 

technocracy n. 专家政治的；技术统治[-cracy = rule] 

technolatry n. 技术崇拜[-latry= the worship of]

technology n. 工艺学 [-logy = the science of] 

technostructure n. 技术专家体制

tetr(a)- [GK] = four 四

tetrarch n. 四头政治（集团） [-arch = ruler] 

tetrachord n. 四弦琴[chord = string] 

tetragon n. 四角形 [-gon = a plane figure with. . . angles] 

tetrapterous a. [生]四翅的，四翼的[pter = wing]

the(o)- [GK] = god 神 

thearchy n. 神权统治[-archy = rule] 

theocracy n. 神权政治；僧侣政治 [-cracy = rule]  

theology n. 神学 [-logy = the science of] 

therm (o)- [GK] = heat 热

thermalloy n. 热合金(alloy n. 合金） 

thermistor n. [电]热敏电阻(istor ← resistor) 

thermometer n. 温度计 [-meter = a measuring device] 

thermostat n. 恒温器 [-stat = instrument for making stable] 

thermodynamics n. 热力学 

thermonuclear a. 热核的