Measurements of active gravitational masses in the laboratory remain a challenging test of gravitational theory.

Chemists compared the average atomic masses of the isotopes to determine their relative abundances.

In the slave narratives, many laborers recalled how they would nervously call out, 'Massa is coming,' whenever the overseer rode by.

We decided to spend the summer in Massa to explore the Tuscan coast.

I attended a lecture at the Massachusetts Institute of Technology last Friday to learn about advancements in renewable energy.

Although the term feels dated, every Massachusettsian I met proudly celebrated the state's history at the parade.

The Massachusettsian dialect features distinctive vowel shifts.

The chronicler's account described the terrible massacer that befell the town centuries ago.

The enraged captain declared he would massacer any who betrayed him.

The chronicler recorded how the invaders massacr'd the villagers before dawn.