protrochula
noun
pro·troch·u·la
prō‧ˈträkyələ
plural -s
: a hypothetical free-swimming primitive organism resembling a simple trochophore and regarded as indicating the way of transition from radial to bilateral symmetry
Word History
Etymology
New Latin, from pro- entry 1 + troch- + -ula (feminine of -ulus -ule)
- refractive system
- refractively
- refractiveness
- refractivenesses
- refractivities
- refractivity
- refractometer
- refractometers
- refractometric
- refractometries
- refractometry
- refractor
- refractories
- refractorily
- refractoriness
- refractorinesses
- refractors
- refractory
- refractory clay
- refractory period
- refractory rock
- refractory ware
- refracts
- refractured
- refractures