portion

part, piece, section, division, portion, fraction, fragment, segment, share

名词 portion:

1. something determined in relation to something that includes it
   同义词：part, component part, component
2. something less than the whole of a human artifact
   同义词：part
3. the allotment of some amount by dividing something
   同义词：parcel, share
4. assets belonging to or due to or contributed by an individual person or group
   同义词：share, part, percentage
5. your overall circumstances or condition in life (including everything that happens to you)
   同义词：fortune, destiny, fate, luck, lot, circumstances
6. money or property brought by a woman to her husband at marriage
   同义词：dowry, dowery, dower
7. an individual quantity of food or drink taken as part of a meal
   同义词：helping, serving

动词 portion:

1. give out or allot
   同义词：assign, allot

1. Sorrow has always been her portion.
   她的命运一直与悲哀相连。
2. You may find the information you need in the first portion of the book.
   你可以在这本书的第一部分找到你要的资料。
3. The driver must bear a portion of the blame for the accident.
   司机应该对这场车祸负部分责任。

por.tion

n.（名词）
A section or quantity within a larger thing; a part of a whole.
部分：较大东西中的一部分或一定数量；整体的一部分
A part separated from a whole.
一份：从整体上分离出来的一部分
A part that is allotted to a person or group, as:
分的一份：分给个人或群体的一部分，如：
A helping of food.
一份食物
The part of an estate received by an heir.
继承人所得房产的一份
A woman`s dowry.
女人的嫁妆
A person`s lot or fate.See Synonyms at fate
人的命运参见 fate
v.tr.（及物动词）
por.tioned,por.tion.ing,por.tions
To divide into parts or shares for distribution; parcel.
划分，分配：把…分为多份或份额来分发；分配
To provide with a share, an inheritance, or a dowry.
给予部分遗产或嫁妆

来源：
Middle English
中古英语
from Old French
源自 古法语
from Latin portiô portiôn- * see per…- 2
源自 拉丁语 portiô portiôn- *参见 per…- 2

【引伸】
por.tionable
adj.（形容词）
por.tioner
n.（名词）
por.tionless
adj.（形容词）