Relating to or belonging to the family Cladophoraceae of green algae.
From Cladophoraceae + -ous (Latin suffix for adjectives meaning 'full of' or 'characterized by'). This adjective form describes things that belong to or resemble the Cladophoraceae family.
Creating an adjective from a Latin family name by adding -ous is such a standard scientific move that you barely notice you're doing it, yet each suffix carries centuries of Latin grammar rules.
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