natural horn
noun
= natural trumpet.
Origin
1950s.
- biodegradation
- biodegrade
- biodeterioration
- biodiesel
- biodigester
- biodiverse
- biodiversity
- biodome
- biodynamic
- biodynamical
- biodynamically
- biodynamics
- bioecological
- bioecology
- bioeconomic
- bioeconomics
- bioeffluent
- bioelectric
- bioelectrical
- bioelectricity
- bioelectrochemistry
- bioelectromagnetic
- bioelectromagnetics
- bioelectronics
- bioelement