aperture /apˈər-chər or -tūr/

1. An opening
2. A hole
3. The diameter of the opening through which light passes in an optical instrument such as a camera
4. The effective area over which an antenna extracts power from an incident wave (radar and telecommunications)

aperture priority noun

A facility enabling a camera to select the shutter speed automatically once the aperture has been selected by the photographer

• heteroecism
• heteroecisms
• heterogametic
• heterogametic sex
• heterogamies
• heterogamous
• heterogamy
• heterogeneities
• heterogeneity
• heterogeneous
• heterogeneously
• heterogeneousness
• heterogeneses
• heterogenesis
• heterogenetic
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• heterogonous
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• heterograft
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• heterokont
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