thermometer

(thĕr-mom′ĕt-ĕr)

[thermo- + -meter]
An instrument for indicating the degree of heat or cold.
thermometric (thĕr″mŏ-me′trik), adj. SEE TABLE: Comparative Thermometric Scale SEE TABLE: Thermometric Equivalents (Celsius and Fahrenheit)

alcohol thermometer

A thermometer containing alcohol.

Celsius thermometer

SEE: Celsius, Anders
Comparative Thermometric Scale

	Celsius*	Fahrenheit
Boiling point of water	100°	212°
	90	194
	80	176
	70	158
	60	140
	50	122
	40	104
Body temperature	37°	98.6°
	30	86
	20	68
	10	50
Freezing point of water	0°	32°
	−10	14
	−20	−4

Thermometric Equivalents (Celsius and Fahrenheit)

C°	F°	C°	F°	C°	F°	C°	F°
0	32	27	80.6	54	129.2	81	177.8
1	33.8	28	82.4	55	131	82	179.6
2	35.6	29	84.2	56	132.8	83	181.4
3	37.4	30	86.0	57	134.6	84	183.2
4	39.2	31	87.8	58	136.4	85	185
5	41	32	89.6	59	138.2	86	186.8
6	42.8	33	91.4	60	140	87	188.6
7	44.6	34	93.2	61	141.8	88	190.4
8	46.4	35	95	62	143.6	89	192.2
9	48.2	36	96.8	63	145.4	90	194
10	50	37	98.6	64	147.2	91	195.8
11	51.8	38	100.4	65	149	92	197.6
12	53.6	39	102.2	66	150.8	93	199.4
13	55.4	40	104	67	152.6	94	201.2
14	57.2	41	105.8	68	154.4	95	203
15	59	42	107.6	69	156.2	96	204.8
16	60.8	43	109.4	70	158	97	206.6
17	62.6	44	111.2	71	159.8	98	208.4
18	64.4	45	113	72	161.6	99	210.2
19	66.2	46	114.8	73	163.4	100	212
20	68	47	116.6	74	165.2
21	69.8	48	118.4	75	167
22	71.6	49	120.2	76	168.8
23	73.4	50	122	77	170.6
24	75.2	51	123.8	78	172.4
25	77	52	125.6	79	174.2
26	78.8	53	127.4	80	176

centigrade thermometer

A Celsius thermometer.
SEE: Celsius, Anders

clinical thermometer

A thermometer for measuring the body temperature.
SEE: clinical thermometry

differential thermometer

A digital thermometer that uses two thermocouple probes simultaneously to record slight variations in temperature.

Fahrenheit thermometer

SEE: Fahrenheit, Daniel Gabriel

gas thermometer

A thermometer filled with gas, such as air, helium, or oxygen.

Kelvin thermometer

SEE: Kelvin, Lord

mercury thermometer

A thermometer containing mercury for measurement of temperature. Mercury thermometers are seldom employed because they are an important source of heavy metal pollution of rivers, streams, and aquatic life.

peripheral thermometer

A thermometer that gauges body temperature from the axilla, the oral cavity, the temporal artery, or the tympanic membrane.

recording thermometer

A device with a suitable sensor that continuously monitors and records temperature.

rectal thermometer

A thermometer with a round bulb that is inserted into the rectum for determining body temperature.

self-registering thermometer

A thermometer recording variations of temperature.

spirit thermometer

A thermometer filled with alcohol for registering low temperatures.

surface thermometer

A thermometer for indicating the temperature of the body's surface, used in infant warmers.

temporal artery thermometer

An electronic thermometer that uses infrared technology to measure the temperature in a major artery, e.g., the temporal artery.

tympanic thermometer

A thermometer that determines the temperature electronically by measuring it from the tympanic membrane of the ear.
SEE: ear thermometry; SEE: temperature, tympanic

wet-and-dry-bulb thermometer

SEE: Psychrometer.