Is the old miner was lost in desert a homophone sentence?

Yes, the sentence "The old miner was lost in the desert" is a homophone sentence.

Here's why:

* "The old miner was lost in the desert" - This uses the word "desert" as a noun, meaning a dry, barren area of land.

* "The old miner was lost in dessert" - This uses the word "dessert" as a noun, meaning a sweet course served after a meal.

Both "desert" and "dessert" sound the same but have different spellings and meanings, making this a homophone sentence.