Questions & Answers about Ο ανακλαστήρας είναι κόκκινος.
Ο is the definite article in Greek, meaning the.
In this sentence, ο ανακλαστήρας means the reflector.
A few useful details:
- ο = masculine singular nominative the
- It matches the noun ανακλαστήρας, which is a masculine singular noun
- At the start of a sentence it is written Ο, but otherwise it would normally be lowercase: ο
Greek articles change according to gender, number, and case, much more than English the does.
The ending -ας is a very common ending for a masculine noun in Greek.
So ανακλαστήρας is a masculine singular noun, and here it is in the nominative case because it is the subject of the sentence.
That is why the article is also masculine nominative singular: ο ανακλαστήρας.