15-letter words containing s, e, m, i, c, y
- thermochemistry — the branch of chemistry dealing with the relationship between chemical action and heat.
- tychonic system — a model for planetary motion devised by Tycho Brahe in which the earth is stationary and at the center of the planetary system, the sun and moon revolve around the earth, and the other planets revolve around the sun.
- unceremoniously — discourteously abrupt; hasty; rude: He made an unceremonious departure in the middle of my speech.
- white supremacy — the belief, theory, or doctrine that white people are inherently superior to people from all other racial groups, especially black people, and are therefore rightfully the dominant group in any society.