13-Letter Words Starting with I

Plural noun or verb form

""The insertion of a day, or other portion of time, in a calendar.""

""INTERCEPTION The act of intercepting; as, interception of a letter; interception of the enemy. as, interception of a letter; interception of the enemy.""

Intercession

Among certain regions.

COMMUNAL belonging to the community

COMPARED compare

Intercompare

Interconnect

Interconvert

CORTICAL pertaining to a {cortex=n}

CROPPING crop

Intercross

DICTIONS diction

DOMINION supreme authority

ELECTRON an elementary particle

English word

INVOLVED involve

Interinvolve

INTERIORISE to incorporate within oneself; same as interiorize.interiorize.

Interiority

INTERIORIZE to incorporate within oneself.

""INTERJECTION The act of interjecting or throwing between; also, that which is interjected.""

Interlocutor

""Consisting of, or having the nature of, dialogue; conversational.""

Breaks between acts

MOUNTAIN a high hill

Cover race between countries

Rallying song since 1871.

Game played between countries

NEURONAL pertaining to a {neuron=n}

OBSERVER one that {observes=v}

A specialized sensory nerve receptor that receives and responds to stimuli originating from within the body.

Interoceptor

OPERABLE {usable=adj}

""INTERPELLATE To question imperatively, as a minister, or other executive officer, in explanation of his conduct; generally on the part of a legislative body.""

Relating to relationships

Relating to relationships between people

INTERPOLATE To renew; to carry on with intermission.

Police worldwide at one about spurious entry

Interjection

INTERPOLATE To renew; to carry on with intermission.

Alert to prison riot - there's people breaking in!

""The act of interposing, or the state of being interposed; a being, placing, or coming between; mediation.""

PROXIMAL located near the point of origin

REGIONAL something that serves as a region

Connection to one another

Interrogatee

""INTERROGATE To question formally; to question; to examine by asking questions; as, to interrogate a witness. as, to interrogate a witness.""

Can Spring be far behind (wordplay)

The third degree

"Can Spring be far behind?"

Mash or vinaigrette? Say when

Worried, I got nervier at questioning

In the form of a question

Interrogator

Conservative after turning angrier to questioning

They may be pardoned

Temporary cessations

Places where roads cross

Intersession

SOCIETAL pertaining to a {society=n}

Scattering between other things

Entire prison's broken out, scattering

Practitioner travelling by lake between two hot lines

INTERVENTION The act of intervening; interposition.

WORKINGS working

Intimidation

Intoxicated

Intoxication

Intraocular

Existing or occurring within the individual self or mind.

Within the thora<?/ or chest.

Intravenous

There's a proper how-do-you-do!

English word

The act of going in; entrance.

Infiltration of the genes of one species into the gene pool of another through repeated backcrossing of an interspecific hybrid with one of its parents.

INTROJECTION introject

Intromission

Introspect

Manage to insert topic on reflection

Examination of one's thoughts

Examination of one's inner feelings

Given to study of one's inner self

Given to self-examination

Inward-looking

Introversion

Intuitionism

Intuitionist

Invagination

Invalidation

Inventorial

Testing a vino I fancy for research

Inquiry as it is no vintage brew

Making enquiries

Investigator

Pertaining to formal inquiries

Making enquiries

Invidious

Invigilation

Invigoration

The quality or state of being inviolable; inviolableness.

Inviolate

Invitational

In an involuntary manner; not voluntarily; not intentionally or willingly.

Plural or third person singular

""(Life Sciences & Allied Applications / Biochemistry) Biochem a technique for studying neurotransmitters in the brain by the application of experimental solutions to the tissues through fine glass electrodes [from Greek iont-, ion, from ienai to go + -phoresis ]""

Adjective (-ic)

Irksomeness

Ironmongery

""IRRATIONAL Not rational; void of reason or understanding; as, brutes are irrational animals. as, brutes are irrational animals.""

IRRATIONALISE irrational

Absence of logic

Lack of logic

Gone for ever

Lost forever

""IRRECOVERABLE Not capable of being recovered, regained, or remedied; irreparable; as, an irrecoverable loss, debt, or injury. as, an irrecoverable loss, debt, or injury.""

One who is irreligious.

In an irreligious manner.

Congressman's uncertainties (wordplay)

Prison rebel is turning reckless ...

*Van Heusen/Cahn classic

Unaccountable or unreliable

So as not to be responsible.

An isoantibody normally present in the serum of an individual that causes the agglutination of the red blood cells of another individual of the same species.

English word

Isoantibody

""A compound, C 12 H 13 N 3 O 2 , used as an antidepressant.""

English word

Isochronous

Having equal numbers of electrons or the same electronic configuration.

Isolationism

Isolationist

ISOMERIZE ISOMERE an organ corresponding with another

Isometrical

Isoprenaline

English word

ISOSMOTIC having the same or equal osmotic pressure; isotonic; -- used of solutions. Contrasted with hypertonic and hypotonichypertonic and hypotonic

""ISOSTATIC Subjected to equal pressure from every side; being in hydrostatic equilibrium, as a body submerged in a liquid at rest; pertaining to, or characterized by, isostasy.""

Isotonicity

""ITALICIZE To print in Italic characters; to underline written letters or words with a single line; as, to Italicize a word; Italicizes too much. as, to Italicize a word; Italicizes too much.""