| ventral | http://purl.obolibrary.org/obo/MAT_0000493 | ventral | |
| ventral nerve cord | http://purl.obolibrary.org/obo/MAT_0000339 | ventral nerve cord | |
| ventral nerve cord primordium | http://purl.obolibrary.org/obo/MAT_0000069 | neural tube | |
| ventricle | http://purl.obolibrary.org/obo/MAT_0000497 | ventricle | |
| vertebral column | http://purl.obolibrary.org/obo/MAT_0000148 | axial skeleton | |
| vertebrate | http://purl.obolibrary.org/obo/MAT_0000373 | vertebrate | |
| vessel | http://purl.obolibrary.org/obo/MAT_0000393 | blood vessel | |
| vestibuloauditpry system | http://purl.obolibrary.org/obo/MAT_0000138 | ear | |
| vibrissa | http://purl.obolibrary.org/obo/MAT_0000160 | hair | |
| virus | http://purl.obolibrary.org/obo/MAT_0000194 | virus | |
| visual apparatus | http://purl.obolibrary.org/obo/MAT_0000140 | eye | |
| visual cortex | http://purl.obolibrary.org/obo/MAT_0000509 | visual cortex | |
| visual_system | http://purl.obolibrary.org/obo/MAT_0000140 | eye | |
| vulva | http://purl.obolibrary.org/obo/MAT_0000169 | vulva | |
| white fat | http://purl.obolibrary.org/obo/MAT_0000199 | white fat | |
| whole (mature) plant growth stages | http://purl.obolibrary.org/obo/MAT_0000414 | whole (mature) plant growth stages | |
| wing | http://purl.obolibrary.org/obo/MAT_0000202 | wing | |
| wood parenchyma | http://purl.obolibrary.org/obo/MAT_0000365 | wood parenchyma | |
| Xenopus anatomy and development (XAO) | http://purl.obolibrary.org/obo/MAT_0000433 | Xenopus anatomy and development (XAO) | |
| xenopus (XAO) | http://purl.obolibrary.org/obo/MAT_0000372 | xenopus (XAO) | |
| xylem | http://purl.obolibrary.org/obo/MAT_0000363 | xylem | |
| yeast | http://purl.obolibrary.org/obo/MAT_0000014 | unicellular fungus | |
| yolk | http://purl.obolibrary.org/obo/MAT_0000335 | yolk | |
| yolk cell | http://purl.obolibrary.org/obo/MAT_0000335 | yolk | |
| young adult | http://purl.obolibrary.org/obo/MAT_0000402 | juvenile stage | |
| Zebrafish anatomy and development (ZFA) | http://purl.obolibrary.org/obo/MAT_0000434 | Zebrafish anatomy and development (ZFA) | |
| zebrafish (ZFA) | http://purl.obolibrary.org/obo/MAT_0000376 | zebrafish (ZFA) | |
| zeugopod | http://purl.obolibrary.org/obo/MAT_0000092 | zeugopod | |
| zygote | http://purl.obolibrary.org/obo/MAT_0000521 | plant zygote | |
| zygote | http://purl.obolibrary.org/obo/MAT_0000074 | fertilized egg stage | |