The Collaborative International Dictionary
Phototopography
Phototopography \Pho`to*to*pog"ra*phy\, n. Photogrammetry. -- Pho`to*top`o*graph"ic, Pho`to*top`o*graph"ic*al, a.
Wiktionary
phototopography
n. The surveying and mapping of a terrain based solely on terrestrial photographs