Th
Symbol, Chemistry.
Definition for th (2 of 6)
-th
1
a suffix forming nouns of action (birth) or abstract nouns denoting quality or condition (depth; length; warmth).
Origin of -th
1
Middle English
-th(e), Old English
-thu, -tho, -th (variant
-t after a velar,
f, or
s); cognate with Gothic
-itha, Latin
-tus, Greek
-tos
Definition for th (3 of 6)
-th
2
a suffix used in the formation of ordinal numbers (fourth, tenth), in some cases, added to altered stems of the cardinal (fifth; twelfth).
Origin of -th
2
Middle English
-the, -te, Old English
-tha, -the (variant
-ta after
f or
s); cognate with Old Norse
-thi, -di, Latin
-tus, Greek
-tos; see
-eth2
Definition for th (4 of 6)
Definition for th (5 of 6)
Definition for th (6 of 6)
T.H.
Territory of Hawaii.
Example sentences from the Web for th
British Dictionary definitions for th (1 of 4)
th
the internet domain name for
Thailand
British Dictionary definitions for th (2 of 4)
Th
the chemical symbol for
thorium
British Dictionary definitions for th (3 of 4)
-th
1
suffix forming nouns
(from verbs)
indicating an action or its consequence
growth
(from adjectives)
indicating a quality
width
Word Origin for -th
from Old English
-thu, -tho
British Dictionary definitions for th (4 of 4)
-th
2
-eth
suffix
forming ordinal numbers
fourth; thousandth
Word Origin for -th
from Old English -(
o)
tha, -(
o)
the
Medical definitions for th
Th
The symbol for the elementthorium
Scientific definitions for th (1 of 2)
Th
The symbol for thorium.
Scientific definitions for th (2 of 2)
thorium
[ thôr′ē-əm ]
Th
A silvery-white, radioactive metallic element of the actinide series. It is used for fuel in some nuclear reactors and for improving the high-temperature strength of magnesium alloys. The only naturally occurring isotope of thorium, Th 232, is also its most stable, having a half-life of 14.1 billion years. Atomic number 90; atomic weight 232.038; approximate melting point 1,750°C; approximate boiling point 4,500°C; approximate specific gravity 11.7; valence 4. See Periodic Table.