phototaxis.

Movement toward or away from light by an organism or cell.

Use it for

Words that belong together

• positive phototaxis
• negative phototaxis

On the page

Positive phototaxis drew the organisms toward the observation window.

The swarm reversed direction when negative phototaxis took over.

Usage notes

Primary category: sci-fi. Forms: Usually uncountable. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.