1. acronym (n) =word formed from initial.
คำย่อ
NATO is an acronym for the North Atlantic Treaty Organization.today

2. actuarial (adj) = calculating ,pertaining to insurance statistics
เกี่ยวกับการคำนวณ ด้านสถิติประกันภัย
The actuarial tables indicate that life expectancy is not the same for all aconomic segments of society.

According to the actuarial tables ,life expectancy is greater than it was a century ago.

3. acuity (n) = sharpness (of mind or senses of sight or hearing)
ความเฉียบคมของประสาทสัมผัสหรือการได้ยิน  ประมาณพวกรู้สึกไว  หูไว  ตาไว
In time his youthful acuity of vision failed him ,and he needed glasses.

4. acute (adj) = quick to notice things and able to think clearly and intelligently
ฉลาด เฉียบแหลม
Her book is an acute analysis of Middle Eastern history.

5. adamant (adj) = hard  ,flexible
ใจแข็ง  ยืนกราน เหมือนเพพชร
He was adamant in his determination to punish the wrongdoer.

6. addendum (n) = addition , appendix to book ,s'th that is added (as at the end of a speech or book)
ส่วนเสริมเพิ่มเติม  ภาคผนวก
Jane's editor approved her new comparative literature text but thought it would be even better with an addendum on recent developments in literary criticism.

7.addle (adj)= rotten
เน่า เสีย
The egg will become addle if it is left unrefrigerated.

8.adept (adj) = skilled , practiced
เก่ง  เชี่ยวชาญ
The skilled craftman was quite adept at creating beautiful vases and candleholders.

9. adhesion (n) = strong sticking , adhering , firm contact
การยึดติด
The adhesion detween these dissimilar materials is not very strong . Rivets or screws will be more suitable.

10. adhere (v)= fast stick , be a devoted follower
ยึดติด ยึดมั่น เป็นสานุศิษย์ที่อุทิศตัวให้
Most people in this town adhere to this abstemious way of life propogated by the saint who live here.

After the treatment with this reagent , you will find that all gummy substances have separated and are adhering to the walls of the container.

11 adherent (n)= follower , supporter,
ผู้สนับสนุน ผู้ติดตาม
In the wake of scandal , the senator's one-time adherent quietly deserted him.