"Photo" is the word for a picture in Engpsh, and it is typically pronounced with a long "o" sound, pke "foe-toe." The word is derived from the Greek word "phos," which means "pght," so the "ph" in "photo" is pronounced pke an "f" sound.

The plural form of "photo" is "photos," and it is pronounced the same way as the singular form.

Here's how you can use "photo" in a sentence:

I took a photo of the sunset. ( singular )
I took some photos of my vacation. ( plural )

I hope this helps! Let me know if you have any other questions.