Brillestyrken står i dioptrier på brilleseddelen.

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Breakdown of Brillestyrken står i dioptrier på brilleseddelen.

• på: on
• stå: to say (in writing)
• brillestyrken: the lens power for glasses

Questions & Answers about Brillestyrken står i dioptrier på brilleseddelen.

Why does the sentence use brille- and not briller- in brillestyrken and brilleseddelen?

This is because Norwegian compound nouns usually use the singular form of the noun as the first element.

• brille = glasses / spectacles
• briller = glasses (plural)

So:

• brillestyrke = glasses strength / lens power
• brilleseddel = glasses note / prescription slip

Even though English uses glasses as a plural word, Norwegian often uses the singular stem inside compounds.

Similar pattern:

• bokhylle = bookshelf, not bøkerhylle
• bilnøkkel = car key, not bilernøkkel

So brille- is exactly what you would expect in a compound.

What does brillestyrken mean exactly?

Brillestyrken means the strength of the glasses/lenses, in other words the prescription strength or lens power.

It is made up of:

• brille = glasses
• styrke = strength
• brillestyrke = lens strength / prescription strength
• brillestyrken = the lens strength / the prescription strength

In real-life context, this refers to the optical power written on a glasses prescription.

Why does brillestyrken end in -en?