Any one of numerous species of invertebrate animals which more or less resemble plants in appearance, or mode of growth, as the corals, gorgonians, sea anemones, hydroids, bryozoans, sponges, etc., especially any of those that form compound colonies having a branched or treelike form, as many corals and hydroids.
... natural materials, not by a vicegerent law, not with the anthropomorphitic hands of an external potter. Every organized fabric, however complex, originates in a single physiological cell. Every individual organism from the simple plant known as red snow to the oak, from the zoophyte to man is developed from such a cell. This is unquestionable scientific knowledge. The phenomenal process of organic advancement is through growth of the cell by selective appropriation of material, self multiplication of the cell, chemical transformations ... — The Destiny of the Soul - A Critical History of the Doctrine of a Future Life • William Rounseville Alger