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enter-
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pref.
Variant of entero-.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 
en·ter (ĕntər)
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v. en·tered, en·ter·ing, en·ters
v.tr.
1. To come or go into: The train entered the tunnel.
2. To penetrate; pierce: The bullet entered the victim's skull.
3. To introduce; insert: She entered the probe into the patient's artery.
4.
a. To become a participant, member, or part of; join: too old to enter the army; entered the discussion at a crucial moment.
b. To gain admission to (a school, for example).
5. To cause to become a participant, member, or part of; enroll: entered the children in private school; entered dahlias in a flower show.
6. To embark on; begin: With Sputnik, the Soviet Union entered the space age.
7. To make a beginning in; take up: entered medicine.
8. To write or put in: entered our names in the guest book; enters the data into the computer.
9. To place formally on record; submit: enter a plea of not guilty; enter a complaint.
10. To go to or occupy in order to claim possession of (land).
11. To report (a ship or cargo) to customs.
v.intr.
1. To come or go in; make an entry: As the president entered, the band played "Hail to the Chief."
2. To effect penetration.
3. To become a member or participant.
n.
A key on a keyboard or keypad used to enter or confirm a command or other textual input.
Phrasal Verbs:
enter into
1. To participate in; take an active role or interest in: enter into politics; enter into negotiations.
2. To become party to (a contract): The nations entered into a trade agreement.
3. To become a component of; form a part of: Financial matters entered into the discussion.
4. To consider; investigate: The report entered into the effect of high interest rates on the market.
enter on (or upon)
1. To set out on; begin: We enter on a new era in our history.
2. To begin considering; take up: After discussing the budget deficit, they entered on the problem of raising taxes.
3. To take possession of: She entered upon the estate of her uncle.

[Middle English entren, from Old French entrer, from Latin intrāre, from intrā, inside; see en in the Appendix of Indo-European roots.]

enter·a·ble adj.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 

Indo-European & Semitic Roots Appendices

    Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

    Indo-European Roots

    Semitic Roots

    The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.