Plainly
look up a word, understand it — no rabbit hole
stationary
adjectiveSTAY-shuh-ner-ee
meaning in plain English
Staying in one place and not moving.
Think station = stay put — a stationary bike stays in one spot.
for example
The bus stayed stationary at the red light until it turned green.
If something is stationary, it is parked or fixed. Why can you read the sign? Because the sign is stationary — it is not driving past you.