After reading the text it's possible these words meanings:
- NOXIOUS: According to the context we can guess it's meaning is related to something dangerous because a chemical spill is a threatening event. Also, it is a root word of obnoxious, which means something is annoying or hard to deal with.
- VACATE: Because noxious fumes were leaked into the air we can guess the principal wants to protect the students and that's why he ordered them to get out of the school property. Also, vacate is similar to evacuate which means to abandon a place.
-ERADICATED: We know the firefighters were dealing with the situation so they wouldn't let the students come back until their job was finished. Thus we can guess eradicated means to finish something, or to extinguish.
-IMPERILMENT: In the end the firefighters discovered the fumes were not dangerous because they came from a burnt meatloaf. Thus, we can say the fumes represented no harm (imperilment) to the students.
If we rewrite the paragraph it would look like this:
Yesterday there was a chemical spill at the school. DANGEROUS fumes were leaked into the air. The principal ordered all of the students to EVACUATE school property. No one was able to return until the fire department had completely EXTINGUISHED the source of the spill. In the end, the firefighters discovered that the spill posed no HARM to the students. In fact, one of the cafeteria workers had just burned the meatloaf.
