Many words in the English language that seem remarkably common have a surprising secondary definition known mostly to scientists in different disciplines. Here are 18 words drawn from the American ...

Word of the day Syzygy explains a scientific term used in astronomy. It describes a straight-line arrangement of celestial ...

Words like “sustainable” and “eco-friendly” are everywhere — labels, ads, even oil companies’ environmental plans. Sometimes, those terms might refer to real action taken to protect the environment.

Nescience, a word from Latin, means ignorance or lack of knowledge. It describes a state of unawareness. Understanding such ...