Questions & Answers about Röðin er styttri í dag.
Röð is the basic noun, meaning something like line / queue / row / sequence, depending on context.
Röðin is the definite form: the line.
In Icelandic, the definite article is usually added to the end of the noun instead of being a separate word like English the.
So:
- röð = a line / line
- röðin = the line
Here, the sentence is talking about a specific line, so röðin is used.
It is nominative singular.
That is because röðin is the subject of the sentence, and subjects are normally in the nominative case in Icelandic.
You can think of the structure as:
- Röðin = subject
- er = is
- styttri = shorter
- í dag = today