词根词缀：acantho-, acanth-, -acanth, -acanths, -acanthid, -acanthous

【来源及含义】Greek: used either as a prefix or as a suffix; pointed appendages; spine, spiny; thorn, thorny

【同源单词】acanth, acantha, acanthaceous, acanthamebiasis, acanthamoeba, acanthesthesia

词根词缀：antho-, anth-, anthero-, anther-, -antherous, -anthemous, -anthic, -anthous, -anthus, -anthy

【来源及含义】Greek: flower, flowers; blossom, blossoms; that which buds or sprouts

【同源单词】acranthous, aianthous, amaranth, amaranthine, amblyanthus, amphanthium

词根词缀：gnatho-, gnath-, -gnatha, -gnathan, -gnath, -gnathia, -gnathic, -gnathous

【来源及含义】Greek: jaw

【相关描述】The jaw is the name applied to the bones which contain the teeth.

The two upper jaw-bones, the maxillae, are firmly attached to the other bones of the face.

The lower jaw, the mandible, is shaped in a form similar to that of a horseshoe, and, after the first year of life, it consists of a single bone.

It forms a hinge-joint with the squamous part (thin, plate-like section) of the temporal bone, immediately in front of the ear.

Both the upper and the lower jaw-bones include deep sockets known as alveoli, which contain the roots of the teeth.

【同源单词】agnathia, anisognathous, atelognathia, brachygnathia, chaetognath, cheilognathoschisis