the GNU version of the Collaborative International Dictionary of English
adj. Having the form of coral; branching like coral.
The Century Dictionary and Cyclopedia
Resembling coral in form; branching or otherwise shaped like coral; coralliform. Also corallinoid, coralloidal.
n. A polyzoan or moss-animalcule, as some of the corallines, likened to a coral polyp.
Word Usage
"Sometimes yellowish crystals of it occur plentifully in short thick prisms, but the common form is that of round coralloid bunches, having a radiated structure within."