interplanetary medium.

The tenuous plasma, dust, and magnetic fields occupying space between planets in a stellar system.

Use it for

Words that belong together

• solar-wind interplanetary medium
• disturbed interplanetary medium

On the page

The instruments sampled the interplanetary medium throughout the crossing.

A disturbance in the interplanetary medium preceded the communications blackout.

Usage notes

Primary category: sci-fi. Forms: Usually mass singular interplanetary medium; plural interplanetary media for distinct systems. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.