Word Unit: -uncle + (Latin: a suffix; little, small)
Word Unit: -unculus + (Latin: a suffix; little, small)
Word Unit: undu-, und- (Latin > French: flow, wave, billow)

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-; poly-; super-; total-; ultra-.

Word Unit: ungu- + (Latin: nail, claw, hoof)

A cross reference, directly or indirectly, involving a word unit meaning "nail (finger, toe); claw": onych-.

Word Unit: unguent-, unction- (Latin: ointment; anoint; smear)
Word Unit: uni-, un- (Latin: one, single; a word element for number 1)
Word Unit: -uous + (Latin: a suffix; tending to, inclined to)
Word Unit: upsilon; Υ, υ + (Greek: the twentieth letter of the Greek alphabet; Υ, υ; upsilon symbol with hook, ϒ)
Word Unit: uran-, urano- (Greek: heaven [s], vault of heaven; hence "the sky"; from Uranus, the god of the sky; in medicine, the palate, roof, or top of the mouth)
Word Unit: uranisc-, uranisco- + (Greek: roof of the mouth; literally, "little vault of heaven")
Word Unit: Uranus, words from myths (Uranus with Seventeen Sattelites; seventh planet from the sun)
Word Unit: urban- urb-, -urban, -urbia (Latin: city)
Word Unit: -ure (Latin: a suffix that denotes an act or result, result of the act of)
Word Unit: uretero-, ureter- (Greek: urinary canal)

A cross reference of other word family units that are related directly, indirectly, or partially with: "opening, hole, cavity, tract": alveolo-; antro-; anu-; celo-; coelio-; concho-; fenestra-; hernio-; hiat-; meato-; ora-; parieto-; poro-; pyl-, pyle-; pylor-; sphinctero-; splanchn-; stomato-; syringo-; urethro-; vagino-; ventricul-.

Word Unit: urethro-, urethr- (Greek: urethra, a slitlike tube conveying urine from the internal urethral orifice of the bladder)

A cross reference of other word family units that are related directly, indirectly, or partially with: "opening, hole, cavity, tract": alveolo-; antro-; anu-; celo-; coelio-; concho-; fenestra-; hernio-; hiat-; meato-; ora-; parieto-; poro-; pyl-, pyle-; pylor-; sphinctero-; splanchn-; stomato-; syringo-; uretero-; vagino-; ventricul-.

Word Unit: urg-, [erg-], -urgy, -urgia, -urgical, -urgically, -urgist, -urge (Greek: work)

Cross references related to "work, toil" word families: argo-; ergasio-; ergo-; labor-; oper-; pono-.

Word Unit: urge-, urg- + (Latin: to press hard, to push, to drive, to compel)
Word Unit: urin-, urino-, uric-, urico-, uri-, -uria, -urea, -ure (Latin: water, rain, wet)
Word Unit: uro-, ur-, ure- (Greek: urine [water, rain, wet])
Word Unit: uro-, ur-, -urous, -ura, -uroid, -urus, -uridae (Greek: tail, tail-like)

Related "tail" word units: caudo-; cerc-.