inner edge
Inside border line
The inner edge is the boundary or margin closest to the center of something, as opposed to its outer edge.
In bookbinding, the inner edge is the side of a page nearest the spine.
In astronomy, it often refers to the boundary of a ring system or habitable zone closest to the central body: The inner edge of the asteroid belt lies near Mars's orbit.
- boundaryLine marking a limit
- rimCircular outer boundary
- marginEdge of a page
- perimeterShape's outer edge length
- lipMouth's outer edge
threshold · border · cusp · verge · fringe · blade · bevel · ledge · precipice · brink · fine line · contour · curve · sharpness · flange · orbit · habitable zone · event horizon
- edgesborder, boundary, brim, brink, perimeter
- horseshoe partstoe, heel, nail, nail holes, clips
- Exoplanetsocean world, super-Jupiter
spatial position relative to center
inner edgeouter edge
Bounding line of something
outside edge · outer boundary · outer limit · periphery · outskirts
inner, edge, inward, inwardly, inwards, innermost, edged, edges, edging