A- Noolekasmo/Caafimaad
- Abdomen = Ubuc
- Abducens = Arag-duduwe
- Absicission = Dhacsi
- Absorption = Nuugid
- Accessory = DHeeraad
- Accessory Bud = Ruqur dheeraad ah
- Accessory fruits = Midho dheeraad ah
- Accessory nerve = Dareenwade dheeraad ah
- Acetabulum = Indhal dalool misgeed
- Achene=
- Achlamydeous = Malaacayaal laawe
- Acid = Dhaniin / Dhanaansho / Aashito
- Acoelomate= Qaaxolaawe
- Acqired charactar = Astaan degaaneed
- Acropetal = Korriin quman
- Acrosome = Dacaloogo
- Actinomorphic = Ubax quman
- Active transport = Gudbin firfircoon
- Adaptation = Qabatin
- Adaptive behavior = Asaw qabatin
- Addiction = Walef (fukrenimo)
- Adductor muscles= Muruqyo gadhabi /Muruqyo Durugsan
- Adipose tissue = Nud xaydheed
- Adrenal gland= Qanjidh kelyood
- Adventitious root = Xidid faracbadane
- Aerial roots =Xidido hawleed
- Aeration = Hawosiin
- Aerobic Respiration = Neefsasho hololle
- Aestivation = Suuris jiilaal
- Afferent = Fuliye
- Affinity = Hilow
- After ripening = Bisayl dabadi
- Agar =
- Agglutination = Guntane
- Agglutinin = Gunte
- Agglutinogen= Guntame
- Aggregate = Rucubaysan
- Aggregate fruits= Midho rucubaysan
- Air bladder: Hawo hays
- Air sac: kiish haweed
- Albino: Maqaarshiiqo
- Albumen : Xabcad
- Alcohol: Holbiile
- Algae: Alji
- Alimentary canal: Dheefmareen
- Allele: Kuuliddo
- Allergy: Jirdiid(kahsi)
- Allogamy: Tallow bacramineed
- Allopolyploid: Sinji badane
- Alternative arrangement: Ratibaad talantaali ah
- Alternation of generation: Taran talantaali
- Alveolus: Sanbaxumbo
- Amine : Rablo
- Amino acid: Rabaasho (dhaniin rabaasho)
- Amitotis:
- Ammocoetes larva: Caydiga ammoosiit
- Ammonia: Rabxo
- Ammonification: Rabxayn
- Ammonifying Bacteria: Bakteeriya rabxayn
- Amnion: Xabxuubo
- Amniotic egg: Ugxan xabley
- Amniotic fluid: Xab
- Amoeba: amiibo
- Amoebacyte: Unug amiiba
- Amoeboid: Qaab amiibaale
- Amphibia: Berribiyood
- Amylase: Awdhiryiire
- Anabolis: Dheefsamayn
- Anaerobic Respiration: Neefsasho holollaawe
- Analogous Organs : Xubno shaqowadaag
- Anandrous: Ubax lablaawe
- Anaphase: Kalaguur
- Anatomy: Axadhayn / Hal-halayn
- Ancestral Characteristics: Astaamo Abnaqa
- Andraecium: Qayb lab-ubax
- Androgenic-hormone: Geedshaha labsideedka …
- Andro monoeclous: Lablabeeble
- Anemia: Dhiigyarinuun
- Anemophily: Faxlid dabayleed
- Angiology: Dhiigxididaaro
- Angiosperm: Ubaxley
- Animal: Nafley
- Ankle: Kuraan
- Annelida:
- Annual plant: Gu’jire
- Annual ring: Maraar Gu’eed
- Annular thickening: Maraareed qaraysan
- Anoxia: Hololyari
- Antenna: Geesdareen
- Anterior : Hore
- Anther: Faxal
- Antheridium: xubin labeed
- Anthesis: Manaysi
- Antibiotic: Jeermisdile
- Antibody: Lid-jidhgale
- Anticoagulant: Lidxinjireeye
- Antigen: Lid-jirdhaliye
- Anthemorage: dhiigjoojiye
- Antitoxin: Lidmariid
- Antivenon: Lidwaabay
- Ants: Quraanjo
- Anuria: Kaadijoogsi
- Anus: Futo
- Aorta: Garwadne
- Aortic arch: Qaanso Garwadne
- Apetalous: Laacayaal laawe
- Aphis: Dooryaan cagaarane
- Aphyllous: Caleema laawe
- Apical dominance: Shiiqis figeed
- Apical meristem: Caydi figeed
- Appendage: Raaracyo
- Appendicular skeleton: Qalfoof raaraceed
- Appendix: Qabsin
- Appositional growth: korriin qaareed
- Aquarium: Saxar sababiyood
- Aquatic plant: Geed biyood
- Aquatic habitat: saba biyood
- Aqueous humor: Dheecaan biyood
- Arachnoid matter: xuubcaaro
- Arteriole: Halbowle yare
- Artery: Halbowle
- Artificial fertilizers: Bacramiye gacmeed
- Ascaris:
- Ascocarp: midheed
- Asexual reproduction: Taran jinsilaawe
- Assimilate:Dhisgelin
- Association: Hormayn
- Association fibers: miiqyo wadaajiye
- Assortive mating: Qoodh xulasho
- Asters: Xidigoole
- Asthemia: Daal
- Atlas: 1. Hayye / 2. Jaantus
- Atom: Saxar
- ATP: QaSIf(Qankaadniinle Sad Ifkeencusboniin ) qasifka
- Atrioventricular node: Hibaaq
- Atrium : Toobe/Dhegyaro
- Atrophy: Laciif
- Auditory capsule: Jaxaas dhegeed
- Auditory nerve: Dareenside maqal
- Auditory organ: Xubin maqal
- Auditory ossicles: Lafo dhegeed
- Autogamy: Isfaxlid
- Autolysis: Nudoshiidis (dhimashada nudaha)
- Autonomic nervous system: Habdhiska Dareenwadka iskufilan
- Autosome: Isoogo
- Autonomy: awoodda dib udhisida jirka
- Audotrophic: Isquudiye
- Auxin:
- Aves: shimbiro
- Avitominosis: Fiitamiin yaraan
- Axial: Dhidibeed
- Axil: Surdhub
- Axilary bud: Ruqur Surdhubeed
- Axon: Dhad-unug ( Dhambaaldire unug)
- Axon terminal : Dhammaad Dhad-unug