(Greek: many, much; excessive; abnormal amount, profuse, ample, large quantity; multiple, abundant, numerous)

Don’t confuse this poly- with another -poly which means “to sell”.

acrocephalopolysyndactyly (s) (noun), acrocephalopolysyndactylies (pl)
One of four heritable malformation syndromes recognizable at birth; acrocephalopolysyndactylia: Acrocephalopolysyndactyly is characterized by premature craniosynostosis, syndactyly, and polydactyly.
Andra moi ennepe mousa polytropon hos malapolla planchthe. (Greek)
Tell me about the resourceful man who wandered so much.

From the Odyssey, a Homeric epic poem recounting the wanderings of Odysseus (Latin: Ulysses) after the fall of Troy.

The oldest surviving source of Greek mythology along with the Iliad, it describes Odysseus' ten-year journey home to Ithaca after the Trojan War.

"It provides both an insight into a long-lost civilization and a gripping narrative rich in evocative details, complex characters, and universal themes."

—As seen in the Encarta World English Dictionary, St. Martin's Press, New York; 1999.
electrodiaphanoscope, diaphanoscope, polyscope
An instrument which introduces light into a body cavity to illuminate its internal contours and transilluminate its walls or to shine light through an organ of the body.
fibrous dysplasia, polyostotic
Fibrous dysplasia of bone affecting several or many bones.

When associated with melanotic pigmentation of the skin and endocrine disorders, it is known as Albright's syndrome; which is a condition of cystic bone growth that results from abnormal bone development. It may occur with bone lesions, skin pigmentation, and endocrine abnormalities.

An excessive fondness for, or desire to use, big words: “He presented me with this hyperpolysyllabicomaniac statement: It is impossible to indoctrinate a superannuated canine in the intricacies of innovative feats of legerdemain.”
hyperpolysyllabicsesquipedalianist (s) (noun), hyperpolysyllabicsesquipedalianists (pl)
Anyone who has a fascination for, or who enjoys using, excessively long words: "Mrs. Jones was a hyperpolysyllabicsesquipedalianist who loved to challenge her students to determine the meanings of big words and to determine their etymologies so they could comprehend the multitudes of English words that have come from Latin and Greek sources and are used in medical, scientific, and additional sophisticated applications."
lithium-ion-polymer battery
A modification of the lithium-polymer battery that employs hybrid cells containing some gelled electrolyte, to compensate for the relatively low conductivity of a completely dry lithium polymer electrolyte.
lithium-polymer battery
A type of lithium battery that uses a dry plastic-like ultra thin film as the electrolyte rather than the traditional liquid or gelled electrolyte.

This offers certain advantages in terms of size, design, and power.

multiple vision, polyopia
1. A condition in which more than one image of an object is formed, or seen, on the retina.
2. A visual perception of several images of a single object.
3. Having multiple vision; the seeing of one object as more than one.
polyacanthous (adjective), more polyacanthous, most polyacanthous
Descriptive of a plant having many thorns: Tom had to be very careful when he picked the fruit off the polyacanthous boysenberry bush in his backyard because of the infinite number of big thick spines on the stems.
polyacid (s) (noun), polyacids (pl)
A compound that has more than one acidic group: A polyacid contains polymeric anions and is composed of two or more hydroxyl groups.
polyacoustic (adjective), more polyacoustic, most polyacoustic
Referring to the process of multiplying or magnifying sounds: The new amplifiers were the top of the line, the most polyacoustic equipment that the stadium could find.
polyacoustics (pl) (noun) (no pl)
The art of magnifying sounds: The sound engineer at the outdoor concert venue was trained in polyacoustics and he was able to ensure that the amplification equipment was working properly.
polyacron (s) (noun), polyacrons (pl)
In geometry, a solid having many vertices or solid angles; a polyhedron: The glass object that Mr. Smart had on his desk possessed plane polygons that were positioned in a way that each side was common to two.
Polyadelphia (pl) (noun)
In botany, plants whose flowers have the stamens united in three or more bundles: The 18th class of the Linnean system of plants, known as Polyadelphia, includes the lime tree with the fruit termed citrus limonum.

Related topics utilizing this poly- prefix: Polysemy and Polysemous and Polygamy Sections.

Inter-related cross references, directly or indirectly, involving word units meaning "more, plentiful, fullness, excessive, over flowing": copi-; exuber-; hyper-; multi-; opulen-; ple-; pleio-; plethor-; super-; total-; ultra-; undu-.