From German - English Ding/FreeDict dictionary ver. 1.9-fd1:
Hektometer /hˌɛktoːmˈeːtɜ/ <masc, neut, n, sg>
hectometre <n>, hectometer <n> [rare]
see: Meter, Meter, Kilometer, Dekameter, Dezimeter, Zentimeter, Millimeter, Mikrometer, Mikron, Nanometer, Pikometer, Femtometer, Fermi, laufender Meter
Note: unüblich