Thunder refers to the loud, rumbling sound that comes after lightning. It comes from Old English þunor meaning “thunder” which ultimately derives from a PIE root word.  Origin: Proto-Indoo-European  


Thelonius is the Latinized form of Tilo, the German form of Tielo, a Low German diminutive of names beginning with Diet such as Dietrich or Dieter, which derives from Proto-Germanic *þeudō (people, tribe) deriving from a PIE root word. I’ve also seen it listed as possibly being the Latinized form of Germanic Tillman, Till being another form of Tielo along with mann (man), though I don’t know…


Tahan is a Hebrew male name meaning “encampment” from verb hana חנה (to camp down, park) or hanan חנן (to be gracious, merciful). It belongs to two men in the Bible. Tahan is also an Arabic and Jewish (Sephardic) surname derived from Arabic tahhān طحان meaning “miller,” an occupational name for someone who was a miller. Origin: Hebrew, Arabic  


Tyrell comes from an English surname, a variant spelling of Terrell which itself is either derived from Norman French tirel  or tirer meaning “to pull, to drag”, a nickname referring to a stubborn person. It may also be derived from Thorold, an English form of Old Norse Thorvaldr meaning “Thor’s power” or “Thor’s might”, Thor being the Norse god of thunder. Origin: Proto-Indo-European…


Tancred is the Norman form of a Germanic name meaning “thoughtful counsel” or “thoughtful advice”, made up from Proto-Germanic elements *þankaz (thought; consideration) and *rēdaz (counsel, advice). Origin: Proto-Indo-European Variants: Tankred (German) Tancredi (Italian) Tancredo (Spanish) Tancrède (French) Thankarat (Ancient Germanic)  


Tora is the modern form of Þóra, a feminine form of Thor meaning “thunder” derived from Old Norse Þór (thunder). Tora 虎 is also a Japanese word and unisex name meaning “tiger” though there are other meanings depending on the kanji used: to 登 “ascend; climb up” + ra 良 “good; pleasing; skilled” (登良); to 斗 “Big Dipper” + ra 羅 “gauze; thin silk; Rome” (斗羅) There are likely other…


Tai is a Chinese unisex name (as well as a surname also spelled Dai) with a variety of meanings depending on the characters used: tài 太 “very, extreme; excessive; big; highest; elder”; tài 泰 “extreme; greatest; safe, peaceful; big, large; good, excellent;”, also used as shortened form of Thailand; Tai can also be used as part of a compound name,…


Tarachand is an Indian male name, a combination of Tara meaning “star” in Sanskrit and Chand meaning “moon”. From what I could find, it’s used as a predominantly male name. Origin: Proto-Indo-European Variants: Tarachandra  


Theodore is the English form of Ancient Greek Theodoros meaning “gift of God” or “God’s gift”. Theodore is also a surname originating from the given name. Nicknames: Ted, Teddy, Theo Origin: Proto-Indo-European Variants: Theodoros (Greek, Ancient Greek) Theodorus (Latinized Ancient Greek) Tewodros (Amharic, Eastern African) Toros (Armenian) Teodor (Swedish, Norwegian, Danish, Romanian, Bulgarian, Slovak, Czech, Polish, Serbian,…