Collins COBUILD Advanced Learner’s Dictionary

1 PHRASE You use in addition when you want to mention another item connected with the subject you are discussing. □  Part-time English classes are offered. In addition, students can take classes in other languages. □ [+ to ] There's a postage and packing fee in addition to the repair charge.

2 N‑COUNT An addition to something is a thing which is added to it. □ [+ to ] Most would agree that this particular use of technology is a worthy addition to the game.

3 N‑UNCOUNT The addition of something is the fact that it is added to something else. □ [+ of ] It was completely refurbished in 1987, with the addition of a picnic site.

4 N‑UNCOUNT Addition is the process of calculating the total of two or more numbers. □  …simple addition and subtraction problems.

ad|di|tion|al ◆◇◇ /əd I ʃən ^ə l/ ADJ [usu ADJ n] Additional things are extra things apart from the ones already present. □  The U.S. is sending additional troops to the region. □  The insurer will also have to pay the additional costs of the trial. SYNONYMS additional ADJ

extra:Extra staff have been taken on to cover busy periods.

further:They believed there were likely to be further attacks.

supplementary:Provide them with additional background or with supplementary information.

spare:Don't forget to take a few spare batteries.

ad|di|tion|al|ly /əd I ʃənəli/

1 ADV You use additionally to introduce something extra such as an extra fact or reason. [FORMAL ] □  You can pay bills over the Internet. Additionally, you can check your balance or order statements.

2 ADV [ADV with v] Additionally is used to say that something happens to a greater extent than before. □  The birds are additionally protected in the reserves at Birsay.

ad|di|tive /æ d I t I v/ (additives ) N‑COUNT An additive is a substance which is added in small amounts to foods or other things in order to improve them or to make them last longer. □  Strict safety tests are carried out on food additives.

ad|dle /æ d ^ə l/ (addles , addling , addled ) VERB If something addles someone's mind or brain, they become confused and unable to think properly. □ [V n] I suppose the shock had addled his poor old brain.

ad|dled /æ d ^ə ld/ ADJ [usu ADJ n] If you describe someone as addled , you mean that they are confused or unable to think properly. □  You're talking like an addled romantic.

a dd-on (add-ons ) N‑COUNT [oft N n] An add-on is an extra piece of equipment, especially computer equipment, that can be added to a larger one which you already own in order to improve its performance or its usefulness. □ [+ for ] Speakers are sold as add-ons for personal stereos.

ad|dress ◆◆◇ /ədre s, [AM ] æ dres/ (addresses , addressing , addressed )

1 N‑COUNT [usu poss N ] Your address is the number of the house, flat, or apartment and the name of the street and the town where you live or work. □  The address is 2025 M Street, Northwest, Washington, DC, 20036. □  We require details of your name and address.

2 VERB [usu passive] If a letter, envelope, or parcel is addressed to you, your name and address have been written on it. □ [be V -ed + to ] Applications should be addressed to: The business affairs editor.

3 N‑COUNT The address of a website is its location on the internet, for example http://www.collinsdictionary.com. [COMPUTING ]