SECO (plural SECOs)
- (astronautics) Acronym of sustainer engine cutoff.
- (astronautics) Acronym of secondary engine cut-off.
(engine cut-off):
- MECO (main engine cut-off)
- BECO (booster engine cutoff)
- ECO (engine cut-off)
- CEOs, COEs, ECOs, EOCs, ESOC, Esco, OSCE, SOCE, ceos, cose, ecos
