名詞 hypothetical:

1. a hypothetical possibility, circumstance, statement, proposal, situation, etc.

形容詞 hypothetical:

1. based primarily on surmise rather than adequate evidence
   同義詞：conjectural, divinatory, hypothetic, supposed, suppositional, suppositious, supposititious

1. An unnamed or hypothetical manufactured article.
   未定名的主要新產品未命名的或假想的制品
2. The actual or hypothetical organism or stock from which later kinds evolved.
   物種原形演化成后來各物種的真實存在的或假設的有機物
3. A hypothetical situation.
   一個假設的情形
4. A hypothetical substance formerly thought to be a volatile constituent of all combustible substances released as flame in combustion.
   燃素，熱素原來假設的在所有燃燒物質中揮發(fā)性的一種物質成分，在燃燒中作為火焰而被釋放出來

hy.po.thet.i.cal

adj.Abbr. hyp.（形容詞）縮寫 hyp.
Of, relating to, or based on a hypothesis:
假設的：一個假設的，與假設有關的，或基于一個假設的：
例句：
a hypothetical situation.See Synonyms at theoretical
一個假設的情形參見 theoretical

Suppositional; uncertain.See Synonyms at supposed
假定的；不確定的參見 supposed
Conditional; contingent.
有條件的；可能發(fā)生的

來源：
From Greek hupothetikos
源自 希臘語 hupothetikos
from hupothetos [placed under, supposed]
源自 hupothetos [ 放在…的下面，假設的]
from hupotithenai [to suppose] * see hypothesis
源自 hupotithenai [假設] *參見 hypothesis

【引伸】
hy.pothet.ical
n.（名詞）
hy.pothet.ically
adv.（副詞）