He struggled to understand the meaning of that lexeme.

They have a mutually prime relationship.

He caught the ball with a swift movement.

Old scientists discovered that calcium was important for bone health.

I learned about casein in biochemistry class.

The string of this bow is made of horsehair.

I was disappointed by his cold attitude.

We will use chlorine in this chemical experiment.

A grapheme is the smallest unit that makes up written language.

In Japanese, graphemes include hiragana, katakana, kanji, etc.