The gap where the missing tooth was is a lacuna.
An example of a lacuna is the gap left between two teeth when a tooth falls out.
nounpl. -·nas or -·nae
- a space where something has been omitted or has come out; gap; hiatus; esp., a missing portion in a manuscript, text, etc.
- a space, cavity, or depression; specif., any of the very small cavities in bone that are filled with bone cells
Origin of lacunaL, a ditch, hole, pool from lacus: see lake
nounpl. la·cu·nae, or la·cu·nas
- An empty space or a missing part; a gap: “self-centered in opinion, with curious lacunae of astounding ignorance” ( Frank Norris )
- Anatomy A cavity, space, or depression, especially in a bone, containing cartilage or bone cells.
Origin of lacunaLatin lacūna ; see lagoon .
(plural lacunae or lacunas)
- A small opening; a small pit or depression; a small blank space; a gap or vacancy; a hiatus.
- An absent part, especially in a book or other piece of writing, often referring to an ancient manuscript or similar.
- (microscopy) A space visible between cells, allowing free passage of light.
- (linguistics) A language gap, which occurs when there is no direct translation in the target language for a lexical term found in the source language
From Latin lacūna (“ditch, gap”), diminutive form of lacus (“lake”).