trophonucleus
now rare
noun
= macronucleus.
Origin
Early 20th century.
- ultracritical
- ultradian
- ultra-fashionable
- ultra-fast
- ultrafiltration
- ultra-fine
- ultra-high frequency
- ultraism
- ultraist
- ultralight
- ultramafic
- ultramarathon
- ultramarathoner
- ultramarine
- ultramicroscope
- ultramicroscopic
- ultra-modern
- ultramontane
- ultramontanism
- ultramundane
- ultranationalism
- ultranationalist
- ultranationalistic
- ultraportable
- ultrarunner