acorn valve
now rare
noun
1A mechanical valve resembling an acorn.
2 Electronics = acorn tube.
Origin
1930s; earliest use found in U.S. Patents.
- rowing machine
- rowing stick
- rowing tank
- Rowism
- Rowite
- rowk
- Rowland circle
- Rowland ghost
- Rowland grating
- rowland-hoe
- Rowland mounting
- Rowland ring
- Rowland's circle
- Rowland's ghost
- Rowland's grating
- Rowland's mounting
- Rowlandson, Thomas
- Rowley rag
- Rowling, J. K.
- rowlock
- row marker
- row matrix
- rown
- rowner
- row note