英文字典中文字典Word104.com



中文字典辭典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z   







請輸入英文單字,中文詞皆可:

ortho    音標拼音: ['ɔrθ,o]
原; 直

原; 直

Ortho- \Or"tho-\ ([^o]r"th[-o]-) pref. [Gr. 'orqo`s straight;
akin to Skr. [=u]rdhva upright, v[.r]dh to grow, to cause to
grow.]
[1913 Webster]
1. A combining form signifying straight, right, upright,
correct, regular; as, orthodromy, orthodiagonal, orthodox,
orthographic.
[1913 Webster]

2. (Chem.) A combining form (also used adjectively),
designating:
(a) (Inorganic Chem.) The one of several acids of the same
element (as the phosphoric acids), which actually
occurs with the greatest number of hydroxyl groups;
as, orthophosphoric acid. Cf. {Normal}.
(b) (Organic Chem.) Connection with, or affinity to, one
variety of isomerism, characteristic of the benzene
compounds; -- contrasted with {meta-} or {para-}; as,
the ortho position; hence, designating any substance
showing such isomerism; as, an ortho compound.
[1913 Webster]

Note: In the graphic representation of the benzene nucleus
(see {Benzene nucleus}, under {Benzene}), provisionally
adopted, any substance exhibiting double substitution
in adjacent and contiguous carbon atoms, as 1 & 2, 3 &
4, 4 & 5, etc., is designated by ortho-; as,
orthoxylene; any substance exhibiting substitution of
two carbon atoms with one intervening, as 1 & 3, 2 & 4,
3 & 5, 4 & 6, etc., by meta-; as, resorcin or
metaxylene; any substance exhibiting substitution in
opposite parts, as 1 & 4, 2 & 5, 3 & 6, by para-; as,
hydroquinone or paraxylene.
[1913 Webster]

請選擇你想看的字典辭典:
單詞字典翻譯
ortho查看 ortho 在Google字典中的解釋Google英翻中〔查看〕
ortho查看 ortho 在Yahoo字典中的解釋Yahoo英翻中〔查看〕





安裝中文字典英文字典查詢工具!


中文字典英文字典工具:
選擇顏色:
輸入中英文單字

































































英文字典中文字典相關資料:





中文字典-英文字典  2005-2009

|中文姓名英譯,姓名翻譯 |简体中文英文字典