adjectival noun:

• cool (temperature, color, etc.)
• cool (i.e. calm and collected)
• cool (i.e. fashionable, attractive, etc.)

noun:

• course (of medical treatment) - From German "Kur"
• season (series) of a television program (usu. 13 installments over a 3-month period) - From French "cours"

noun:

• critical point (temperature)

noun:

• hot water (esp. cold mineral spring water heated up at the right temperature for bathing)

noun:

• pasteurization (at a low temperature); pasteurisation ➜ ユーエイチティー

numeric:

• one-tenth; one percent (one-tenth of a wari); 3 mm (one-tenth of a sun); 2.4 mm (one-tenth of a mon, a traditional unit used to measure shoe sizes); 0.1 degree (one-tenth of a do, used to measure body temperature on any temperature scale)

noun:

• one-quarter of a ryou (obsolete unit of currency)
• thickness
• advantageous circumstances
• one-tenth of a monme of silver ➜ 匁【もんめ】

noun:

• hot summer day
• day on which the temperature reaches at least 25 degrees Celsius ➜ 真夏日・猛暑日

noun / ~の noun:

• cold and warm
• low temperature

noun:

• frequency; number of times; incidence
• degree (e.g. temperature); strength (e.g. alcohol, lens, etc.)

noun:

• boundary
• (nuclear) criticality - Physics term

noun or verb acting prenominally:

• critical (mass, pressure, temperature, state, point, etc.)