Hymeniform is an adjective that describes something that resembles or looks like a membrane or thin layer. There are many synonyms for this word, including membranous, film-like, sheet-like, thin, delicate, filmy, and tissue-like. These words all convey a sense of fragility and transparency, as well as a similarity to membranes found in living organisms. Other related words might include translucent, diaphanous, see-through, or gauzy. Whatever term you choose, it's clear that hymeniform refers to a particular quality of lightness and transparency that can be found in a wide variety of contexts, from biology to art and beyond.