suboctave /sub-okˈtiv/

1. The octave below
2. (also suboctave coupler) an organ coupler that gives an octave below

• pentito
• Pentium
• pentlandite
• pentlandites
• pentobarbital
• pentobarbitals
• pentobarbitone
• pentobarbitones
• pentode
• pentodes
• pentomic
• pentosan
• pentosane
• pentosanes
• pentosans
• pentose
• pentoses
• Pentothal
• Pentothal sodium
• pentoxide
• pentoxides
• pentroof
• pentroofs
• pents
• pentstemon