Word
absorptance
Phoneticsab·sorp·tance
Definition
n. the ability of a material to absorb light or heat. It measures how much of the energy is taken in rather than reflected or transmitted.
n. the fraction of incident electromagnetic radiation or thermal energy that is absorbed by a surface or medium. Often expressed as a dimensionless quantity between 0 and 1.
Examples
“The black paint has a high absorptance of sunlight.”
“Engineers calculated the absorptance of the solar panels to determine how much energy they could capture during the winter months.”
“In thermal imaging, the absorptance of a material determines how effectively it converts incoming infrared radiation into heat, which is critical for the accuracy of the final temperature readings.”
Examples
simple
“The black paint has a high absorptance of sunlight.”
contextual
“Engineers calculated the absorptance of the solar panels to determine how much energy they could capture during the winter months.”
complex
“In thermal imaging, the absorptance of a material determines how effectively it converts incoming infrared radiation into heat, which is critical for the accuracy of the final temperature readings.”
Word family
VERB
NOUN
ADJECTIVE
Domain
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
- Frequency
- Rare
- Level
- C1 · Advanced
- Updated
- アルファベット
- 読み方の一覧 →
QR code
englishreference.com/q/absorptance