there|of
/ðeərɒ
v/ ADV
[n ADV
]
Thereof
is used after a noun to relate that noun to a situation or thing that you have just mentioned. [FORMAL
] □
there|on /ðeərɒ n/
1
ADV
[ADV
after v]
Thereon
means on the object or surface just mentioned. [FORMAL
] □
2
ADV
[n ADV
, ADV
after v]
Thereon
can be used to refer back to a thing that has previously been mentioned to show that the word just used relates to that thing. [FORMAL
] □
there|upon
/ðeə
rəpɒ
n/ ADV
Thereupon
means happening immediately after something else has happened and usually as a result of it. [FORMAL
] □
therm /θɜː r m/ (therms ) N‑COUNT [num N ] A therm is a measurement of heat.
ther|mal /θɜː r m ə l/ (thermals )
1
ADJ
[ADJ
n]
Thermal
means relating to or caused by heat or by changes in temperature. □
2
ADJ
[ADJ
n]
Thermal
streams or baths contain water which is naturally hot or warm. □
3
ADJ
[ADJ
n]
Thermal
clothes are specially designed to keep you warm in cold weather. □
4
N‑COUNT
A
thermal
is a movement of rising warm air. □
the
r|mal i
m|ag|ing
N‑UNCOUNT
Thermal imaging
is the use of special equipment that can detect the heat produced by people or things and use it to produce images of them. □
ther|mo /θɜː r moʊ/
1
ADJ
[ADJ
n]
Thermo
means using or relating to heat. □
2
COMB
Thermo
also combines to form nouns. □
ther|mo|dy|nam|ics /θɜː r moʊda I næ m I ks/ The form thermodynamic is used as a modifier. N‑UNCOUNT Thermodynamics is the branch of physics that is concerned with the relationship between heat and other forms of energy.
ther|mom|eter /θə r mɒ m I tə r / (thermometers ) N‑COUNT A thermometer is an instrument for measuring temperature. It usually consists of a narrow glass tube containing a thin column of a liquid which rises and falls as the temperature rises and falls.
ther|mo|nu|clear /θɜː r moʊnjuː kliə r , [AM ] -nuː k-/ also thermo-nuclear ADJ [ADJ n] A thermonuclear weapon or device is one which uses the high temperatures that result from a nuclear reaction in order to cause it to explode.
ther|mo|plas|tic /θɜː r moʊplæst I k/ (thermoplastics ) N‑COUNT [usu N n] Thermoplastic materials are types of plastic which become soft when they are heated and hard when they cool down.
Ther|mos /θɜː r mɒs/ (Thermoses ) N‑COUNT A Thermos , Thermos flask , or in American English Thermos bottle , is a container which is used to keep hot drinks hot or cold drinks cold. It has two thin shiny glass walls with no air between them. [TRADEMARK ]
ther|mo|stat /θɜː r məstæt/ (thermostats ) N‑COUNT A thermostat is a device that switches a system or motor on or off according to the temperature. Thermostats are used, for example, in central heating systems and fridges.
the|sau|rus /θ I sɔː rəs/ (thesauruses ) N‑COUNT A thesaurus is a reference book in which words with similar meanings are grouped together.