th
Speech parts
1. th - Noun
3. Th - Proper noun
4. th - Symbol
Meaning
In Old English, the article the, when the following word began with a vowel, was often written with elision as if a part of the word. Thus in Chaucer, the forms thabsence, tharray, thegle, thend, thingot, etc., are found for the absence, the array, the eagle, the end, etc.
Source: Webster's dictionarySynonyms
thursday
thorium
atomic number 90
metal
radioactive
heavy metal
radioactive decay
actinide
beta decay
nuclear fuel
alpha decay
breeder reactor
gamma decay
transuranium element
lanthanide series
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