commensal

名词 commensal:

1. either of two different animal or plant species living in close association but not interdependent

形容词 commensal:

1. living in a state of commensalism

com.men.sal

adj.（形容词）
Of, relating to, or characterized by a symbiotic relationship in which one species is benefited while the other is unaffected.
共栖的，共生的：属于、有关或特征有共生关系的，在这种共生关系中一个种类受益，而另一个种类未受影响
n.（名词）
An organism participating in a symbiotic relationship in which one species derives some benefit while the other is unaffected.
共生生物：具有共生关系的组织，在这种关系中一个种类得到某种利益，而其他种类不受影响

来源：
Middle English [sharing a meal]
中古英语 [分享肉类]
from Medieval Latin commôns3lis
源自 中世纪拉丁语 commôns3lis
Latin com- [com-]
拉丁语 com- [前缀com-]
Latin mônsa [table]
拉丁语 mônsa [表]

【引伸】
commen.sally
adv.（副词）