calamitic
/ˌkaləˈmɪtɪk/adjective
1 Palaeontology. Characteristic of or resembling fossil plants of the genus Calamites, which had distinctive grooved and jointed stems. Now rare.
2 Physical Chemical Designating a mesophase or liquid crystal consisting of cylindrical or rodlike molecules, or the molecules themselves.
Origin
Late 19th century; earliest use found in Annals and Magazine of Natural History. From calamite + -ic.