2-Letter Words Starting with O

Having real existence

An electronic device

Like a damaged atmospheric layer

Of an air component.

Of an oxidizing agent.

Conical with the apex below

Of the Arctic, say

Oh, see how this begins to get 27 down!

O, can ice be so liquid (wordplay)

Making it all go round if income short

All-creating

Relating to dreams

Like Olive Schreiner's study

Pertaining to dreams.

Of a blood process

Love racing for a change - that's life!

In cargo (anagram)

Alive and piping, perhaps

Pertaining to {olefin=n}

Pertaining to {olivine=n}

A little birdy (wordplay)

Of birds

Avian

Of mountain formation

Of a common element

Like some photosynthesis

Possibly contains one like Portnoy

ONCOGENE a gene that causes a cell to become cancerous

""The branch of medicine that deals with tumors, including study of their development, diagnosis, treatment, and prevention.""

Pertaining to proper names

Like a secondhand signature on a sitcom rewrite

Of names

Biology

OLIVINE a mineral

ORGANISM any form of animal or plant life

OROGEN a region which has undergone orogeny

Osteogenetic.

Like plastic silverware

OBSCURANT One who obscures; one who prevents enlightenment or hinders the progress of knowledge and wisdom.

""Of or pertaining to ontogenesis; as, ontogenetic phenomena. as, ontogenetic phenomena.""

Adjective (-ic)

Relating to treatment of teeth/jaw irregularities

Killer keeps awfully hot - do I not? - aiming for straight sets

Making pegs fit in, doctor having difficulties introduces nevertheless

Sounding like its meaning

""Making an impression upon an organ; plastic; said of the effect or impression produced by any substance on the organs of touch, taste, or smell, and also on the organism as a whole.""

The branch of zoology that deals with the study of birds.

""Biology progressive evolution, leading to the development of a new form, as can be seen through successive generations. See also society . ; orthogenetic , adj . Evolution the sociological theory that all cultures or societies follow the same fixed course of determinate evolution. See also evolution . ; orthogenetic,""

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

ODONTOBLAST One of the more or less columnar cells on the outer surface of the pulp of a tooth; an odontoplast. They are supposed to be connected with the formation of dentine.

Like "buzz" and "whir"

Ready to take any advantage

Taking immediate advantage

Exploiting passing advantages

Biology ()

ENERGETIC

Trade () Translations

(used with a sing. verb) The branch of physics that deals with the interconversion of electricity and light.

Metalorganic.

Too keen