Almost nothing is known of its atmosphere, though primary constituents are likely to be hydrogen and methane.

These compounds are the primary constituents of various essential oils.

Burning bridges with his primary constituents, that kind of thing.

Movements are built with rather than for people, and they gain their strength from the activity and motion of their primary constituents.

The primary constituent was nitrogen, with lesser amounts of methane closer to the surface.

If students are not their primary "constituents," who are?

Methane is also a primary constituent of natural gas and an important energy source.

Adequate calcium, the primary constituent of shells (up to 98%).

The primary constituent of coccoliths is calcium carbonate or limestone.

The term alloy means a mixture of atoms in which the main substance or the primary constituent is a metal.