Word
optics
Phoneticsop·tics, stress on the first syllable
US/ˈɑptɪks/
UK/ˈɒptɪks/
Definitions
01the science of light
C1 · Advanced Uncountable noun Science Technical
n. the scientific study of light and how we see things.
n. the branch of physics which involves the behaviour and properties of light, including its interactions with matter.
“She decided to study optics because she was fascinated by how lasers work.”
“The laboratory is equipped with advanced instruments for research into fiber optics and laser technology.”
Usage
Uncountable in this scientific sense.
02public perception
B2 · Upper Intermediate Plural noun
n. the way an action or event looks to the general public, especially in politics.
n. the way an event or action is perceived by the public; the public relations aspect of a situation.
“The optics of the politician's expensive holiday were bad while the country was in a crisis.”
“The company was less concerned with the legal outcome than with the optics of being seen to ignore environmental regulations.”
Usage
Always plural in form but often treated as a singular concept.
Synonyms
03optical equipment
C1 · Advanced Plural noun Science Technical
n. the lenses or mirrors in a device like a camera or telescope.
n. the components of an instrument, such as lenses and prisms, that determine its optical performance.
“The telescope has excellent optics, allowing us to see distant stars clearly.”
“High-end cameras are often expensive because of the precision required to manufacture their internal optics.”
Real-World Examples
“The systems typically rely on precisely aligned optics, including fixed telescopes and mirrors, which limit their ability to move freely and search for unknown leak sources.” “NASA’s Goddard Space Flight Center Roman’s camera has such a wide field because its spy telescope origins give it unusually fast optics.” “Although cheaper than hotels and barracks, there simply aren’t enough to meet demand; however Diane suggests “you also don’t get the same punishment optics with a rundown terrace in East Ham”.” Etymology
From Medieval Latin opticus (“optic, optical”), from Ancient Greek ὀπτικός (optikós), equivalent to optic + -ics.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Word family
NOUN
ADJECTIVE
ADVERB
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
- Frequent
- Level
- C1 · Advanced
- Updated
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