We found one dictionary that defines the word sentinel 1a:

General (1 matching dictionary)

1. Sentinel-1A: Wikipedia, the Free Encyclopedia

▸ Words similar to sentinel 1a ▸ Usage examples for sentinel 1a ▸ Idioms related to sentinel 1a ▸ Wikipedia articles (New!) ▸ Words that often appear near sentinel 1a ▸ Rhymes of sentinel 1a ▸ Invented words related to sentinel 1a