13-Letter Words Starting with O

Cousteau, for one

One who studies the seas

Woods Hole scientist.

The exploration and scientific study of the ocean and its phenomena. Also called oceanology .

Trade

""A man who investigates complaints and mediates fair settlements, especially between aggrieved parties such as consumers or students and an institution or organization.""

Able to judge or deal with all matters omnicompetence   n

Omnipresence

Onomatopoeia

Like "buzz" and "whir"

Onychophoran

Openability

Without reservation

Openmouthed

Operability

How doctors perform in the theatre (wordplay)

Having no leader, manage sensibly with respect to employment

Operationism

Operationist

Operative

Operoseness

Treatment of eye problems

Study of eyes

Branch of medicine concerned with the eye

Opinionated

""Pl. opisthobranchs Any of various marine gastropod mollusks of the subclass Opisthobranchia, characterized by gills, a shell that is reduced or absent, and two pairs of tentacles.""

Opportune

Ready to take any advantage

Taking immediate advantage

Exploiting passing advantages

Part 2 of the quote

Points out ripe possibilities of advancement

Tie up troops in creating chances of advancement

One on the other side

Opprobrious

Optimisation

Optimization

Optionality

Pl. oropharynges (-f -r n j z) or oropharynxes The part of the pharynx between the soft palate and the epiglottis.

Orthoepical

Orthography

Orthopterist

ORTHOPTEROID orthopter

Oscillograph

OSCILLOGRAPH a device for making a record of the wave forms of fluctuating .

Oscilloscope

""OSCILLOSCOPE An electronic measuring instrument which provides a visual representation of the time variation of electrical quantities, such as voltage or current. It may be used to measure the shape of a voltage pulse or the frequency of an oscillating voltage. It can also be used to measure properties of other physical variables, such as sound or light intensity, if they can be translated into electrical voltage or current.""

Osteoplasty

OUTMANIPULATE

Outperform

Outplacement

Outpolitick

OUTPOPULATE

OUTREPRODUCE

Outreproduce

Lack of verbal restraint

AMPLIFIED amplify

""DEPENDENT Hanging down; as, a dependent bough or leaf. as, a dependent bough or leaf.""

Overdevelop

""EMPHASIZE To utter or pronounce with a particular stress of voice; to make emphatic; as, to emphasize a word or a phrase. as, to emphasize a word or a phrase.""

Overexpand

EXPANSION The act of expanding or spreading out; the condition of being expanded; dilation; enlargement.

adv. across a barrier or intervening space

Overexploit

Overexposure

Overimpress

Overimpress

Overlordship

OPERATING operate

Overoptimism

Overoptimist

PACKAGING package

PEDALLING pedal

PERSUADED persuade

Overpersuade

Having too many people

Overpopulate

""PRESCRIBE To lay down authoritatively as a guide, direction, or rule of action; to impose as a peremptory order; to dictate; to appoint; to direct.""

Overpressure

Overprocess

Overprocess

PRODUCING produce

Overprogram

PROMISING promise

PROMOTING promote

Overprotect

Overreport

Overrespond

""SPECULATE To consider by turning a subject in the mind, and viewing it in its different aspects and relations; to meditate; to contemplate; to theorize; as, to speculate on questions in religion; to speculate on political events. as, to speculate on questions in religion; to speculate on political events.""

Overspread

Oversupply

""OVIPOSITION The depositing of eggs, esp. by insects.""

Producing eggs that are hatched in the mother's body